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Finding the Fourth Proportional to 128,532.60, 192,683.70 and 114,535.80

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Solution

The fourth proportional to 128,532.60, 192,683.70 and 114,535.80 is: 171,701.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,532.60 : 192,683.70 = 114,535.80 : x
  2. Step 2: Convert to fraction form
    128,532.60/192,683.70 = 114,535.80/x
  3. Step 3: Cross multiply
    128,532.60x = 192,683.70 × 114,535.80
  4. Step 4: Simplify right side
    128,532.60x = 22,069,181,726.46
  5. Step 5: Solve for x
    x = 22,069,181,726.46/128,532.60
  6. Step 6: Final answer
    x = 171,701.04

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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.