Home / 102,781.56-141,827.67-57,454.77

Finding the Fourth Proportional to 102,781.56, 141,827.67 and 57,454.77

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Solution

The fourth proportional to 102,781.56, 141,827.67 and 57,454.77 is: 79,281.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,781.56 : 141,827.67 = 57,454.77 : x
  2. Step 2: Convert to fraction form
    102,781.56/141,827.67 = 57,454.77/x
  3. Step 3: Cross multiply
    102,781.56x = 141,827.67 × 57,454.77
  4. Step 4: Simplify right side
    102,781.56x = 8,148,676,159.49
  5. Step 5: Solve for x
    x = 8,148,676,159.49/102,781.56
  6. Step 6: Final answer
    x = 79,281.50

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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.