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Finding the Fourth Proportional to 105,592.47, 145,600.80 and 67,291.31

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Solution

The fourth proportional to 105,592.47, 145,600.80 and 67,291.31 is: 92,787.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,592.47 : 145,600.80 = 67,291.31 : x
  2. Step 2: Convert to fraction form
    105,592.47/145,600.80 = 67,291.31/x
  3. Step 3: Cross multiply
    105,592.47x = 145,600.80 × 67,291.31
  4. Step 4: Simplify right side
    105,592.47x = 9,797,668,569.05
  5. Step 5: Solve for x
    x = 9,797,668,569.05/105,592.47
  6. Step 6: Final answer
    x = 92,787.57

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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.