Home / 102,939.74-142,078.98-62,666.78

Finding the Fourth Proportional to 102,939.74, 142,078.98 and 62,666.78

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Solution

The fourth proportional to 102,939.74, 142,078.98 and 62,666.78 is: 86,493.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,939.74 : 142,078.98 = 62,666.78 : x
  2. Step 2: Convert to fraction form
    102,939.74/142,078.98 = 62,666.78/x
  3. Step 3: Cross multiply
    102,939.74x = 142,078.98 × 62,666.78
  4. Step 4: Simplify right side
    102,939.74x = 8,903,632,182.28
  5. Step 5: Solve for x
    x = 8,903,632,182.28/102,939.74
  6. Step 6: Final answer
    x = 86,493.63

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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.