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Finding the Fourth Proportional to 105,793.95, 158,689.23 and 42,612.57

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Solution

The fourth proportional to 105,793.95, 158,689.23 and 42,612.57 is: 63,918.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,793.95 : 158,689.23 = 42,612.57 : x
  2. Step 2: Convert to fraction form
    105,793.95/158,689.23 = 42,612.57/x
  3. Step 3: Cross multiply
    105,793.95x = 158,689.23 × 42,612.57
  4. Step 4: Simplify right side
    105,793.95x = 6,762,155,921.62
  5. Step 5: Solve for x
    x = 6,762,155,921.62/105,793.95
  6. Step 6: Final answer
    x = 63,918.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.