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Finding the Fourth Proportional to 97,000.80, 145,501.20 and 90,002.40

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Solution

The fourth proportional to 97,000.80, 145,501.20 and 90,002.40 is: 135,003.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,000.80 : 145,501.20 = 90,002.40 : x
  2. Step 2: Convert to fraction form
    97,000.80/145,501.20 = 90,002.40/x
  3. Step 3: Cross multiply
    97,000.80x = 145,501.20 × 90,002.40
  4. Step 4: Simplify right side
    97,000.80x = 13,095,457,202.88
  5. Step 5: Solve for x
    x = 13,095,457,202.88/97,000.80
  6. Step 6: Final answer
    x = 135,003.60

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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.