Home / 102,389.41-141,298.08-57,070.31

Finding the Fourth Proportional to 102,389.41, 141,298.08 and 57,070.31

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Solution

The fourth proportional to 102,389.41, 141,298.08 and 57,070.31 is: 78,757.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,389.41 : 141,298.08 = 57,070.31 : x
  2. Step 2: Convert to fraction form
    102,389.41/141,298.08 = 57,070.31/x
  3. Step 3: Cross multiply
    102,389.41x = 141,298.08 × 57,070.31
  4. Step 4: Simplify right side
    102,389.41x = 8,063,924,874.76
  5. Step 5: Solve for x
    x = 8,063,924,874.76/102,389.41
  6. Step 6: Final answer
    x = 78,757.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.