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Finding the Fourth Proportional to 103,377.74, 142,664.72 and 58,063.71

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Solution

The fourth proportional to 103,377.74, 142,664.72 and 58,063.71 is: 80,129.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,377.74 : 142,664.72 = 58,063.71 : x
  2. Step 2: Convert to fraction form
    103,377.74/142,664.72 = 58,063.71/x
  3. Step 3: Cross multiply
    103,377.74x = 142,664.72 × 58,063.71
  4. Step 4: Simplify right side
    103,377.74x = 8,283,642,638.99
  5. Step 5: Solve for x
    x = 8,283,642,638.99/103,377.74
  6. Step 6: Final answer
    x = 80,129.85

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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.