Home / 103,618.99-142,999.50-61,176.61

Finding the Fourth Proportional to 103,618.99, 142,999.50 and 61,176.61

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Solution

The fourth proportional to 103,618.99, 142,999.50 and 61,176.61 is: 84,426.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,618.99 : 142,999.50 = 61,176.61 : x
  2. Step 2: Convert to fraction form
    103,618.99/142,999.50 = 61,176.61/x
  3. Step 3: Cross multiply
    103,618.99x = 142,999.50 × 61,176.61
  4. Step 4: Simplify right side
    103,618.99x = 8,748,224,641.70
  5. Step 5: Solve for x
    x = 8,748,224,641.70/103,618.99
  6. Step 6: Final answer
    x = 84,426.85

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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.