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Finding the Fourth Proportional to 123,421.60, 185,024.40 and 83,850.40

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Solution

The fourth proportional to 123,421.60, 185,024.40 and 83,850.40 is: 125,702.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,421.60 : 185,024.40 = 83,850.40 : x
  2. Step 2: Convert to fraction form
    123,421.60/185,024.40 = 83,850.40/x
  3. Step 3: Cross multiply
    123,421.60x = 185,024.40 × 83,850.40
  4. Step 4: Simplify right side
    123,421.60x = 15,514,369,949.76
  5. Step 5: Solve for x
    x = 15,514,369,949.76/123,421.60
  6. Step 6: Final answer
    x = 125,702.23

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1.5x scale

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.