Home / 145,531.38-218,328.99-130,834.74

Finding the Fourth Proportional to 145,531.38, 218,328.99 and 130,834.74

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Solution

The fourth proportional to 145,531.38, 218,328.99 and 130,834.74 is: 196,280.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,531.38 : 218,328.99 = 130,834.74 : x
  2. Step 2: Convert to fraction form
    145,531.38/218,328.99 = 130,834.74/x
  3. Step 3: Cross multiply
    145,531.38x = 218,328.99 × 130,834.74
  4. Step 4: Simplify right side
    145,531.38x = 28,565,016,641.11
  5. Step 5: Solve for x
    x = 28,565,016,641.11/145,531.38
  6. Step 6: Final answer
    x = 196,280.81

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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.