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Finding the Fourth Proportional to 103,529.66, 142,866.33 and 63,310.82

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Solution

The fourth proportional to 103,529.66, 142,866.33 and 63,310.82 is: 87,366.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,529.66 : 142,866.33 = 63,310.82 : x
  2. Step 2: Convert to fraction form
    103,529.66/142,866.33 = 63,310.82/x
  3. Step 3: Cross multiply
    103,529.66x = 142,866.33 × 63,310.82
  4. Step 4: Simplify right side
    103,529.66x = 9,044,984,502.69
  5. Step 5: Solve for x
    x = 9,044,984,502.69/103,529.66
  6. Step 6: Final answer
    x = 87,366.12

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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.