Home / 155,948.73-215,209.32-84,328.80

Finding the Fourth Proportional to 155,948.73, 215,209.32 and 84,328.80

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Solution

The fourth proportional to 155,948.73, 215,209.32 and 84,328.80 is: 116,373.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,948.73 : 215,209.32 = 84,328.80 : x
  2. Step 2: Convert to fraction form
    155,948.73/215,209.32 = 84,328.80/x
  3. Step 3: Cross multiply
    155,948.73x = 215,209.32 × 84,328.80
  4. Step 4: Simplify right side
    155,948.73x = 18,148,343,704.42
  5. Step 5: Solve for x
    x = 18,148,343,704.42/155,948.73
  6. Step 6: Final answer
    x = 116,373.78

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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.