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Finding the Fourth Proportional to 85,818,374,861.60, 128,727,562,292.40 and 85,818,374,861.60

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Solution

The fourth proportional to 85,818,374,861.60, 128,727,562,292.40 and 85,818,374,861.60 is: 128,727,562,292.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,818,374,861.60 : 128,727,562,292.40 = 85,818,374,861.60 : x
  2. Step 2: Convert to fraction form
    85,818,374,861.60/128,727,562,292.40 = 85,818,374,861.60/x
  3. Step 3: Cross multiply
    85,818,374,861.60x = 128,727,562,292.40 × 85,818,374,861.60
  4. Step 4: Simplify right side
    85,818,374,861.60x = 11,047,190,195,829,148,221,440
  5. Step 5: Solve for x
    x = 11,047,190,195,829,148,221,440/85,818,374,861.60
  6. Step 6: Final answer
    x = 128,727,562,292.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.