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Finding the Fourth Proportional to 134,689.80, 185,835.54 and 76,545.72

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Solution

The fourth proportional to 134,689.80, 185,835.54 and 76,545.72 is: 105,612.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,689.80 : 185,835.54 = 76,545.72 : x
  2. Step 2: Convert to fraction form
    134,689.80/185,835.54 = 76,545.72/x
  3. Step 3: Cross multiply
    134,689.80x = 185,835.54 × 76,545.72
  4. Step 4: Simplify right side
    134,689.80x = 14,224,915,210.89
  5. Step 5: Solve for x
    x = 14,224,915,210.89/134,689.80
  6. Step 6: Final answer
    x = 105,612.42

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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.