Home / 145,032.60-218,132.10-129,869.40

Finding the Fourth Proportional to 145,032.60, 218,132.10 and 129,869.40

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Solution

The fourth proportional to 145,032.60, 218,132.10 and 129,869.40 is: 195,326.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,032.60 : 218,132.10 = 129,869.40 : x
  2. Step 2: Convert to fraction form
    145,032.60/218,132.10 = 129,869.40/x
  3. Step 3: Cross multiply
    145,032.60x = 218,132.10 × 129,869.40
  4. Step 4: Simplify right side
    145,032.60x = 28,328,684,947.74
  5. Step 5: Solve for x
    x = 28,328,684,947.74/145,032.60
  6. Step 6: Final answer
    x = 195,326.33

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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.