Home / 85,967,125.60-128,950,688.40-80,924,130.40

Finding the Fourth Proportional to 85,967,125.60, 128,950,688.40 and 80,924,130.40

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Solution

The fourth proportional to 85,967,125.60, 128,950,688.40 and 80,924,130.40 is: 121,386,195.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,967,125.60 : 128,950,688.40 = 80,924,130.40 : x
  2. Step 2: Convert to fraction form
    85,967,125.60/128,950,688.40 = 80,924,130.40/x
  3. Step 3: Cross multiply
    85,967,125.60x = 128,950,688.40 × 80,924,130.40
  4. Step 4: Simplify right side
    85,967,125.60x = 10,435,222,323,251,368
  5. Step 5: Solve for x
    x = 10,435,222,323,251,368/85,967,125.60
  6. Step 6: Final answer
    x = 121,386,195.60

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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.