Home / 115,426.20-173,139.30-103,373.40

Finding the Fourth Proportional to 115,426.20, 173,139.30 and 103,373.40

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Solution

The fourth proportional to 115,426.20, 173,139.30 and 103,373.40 is: 155,060.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,426.20 : 173,139.30 = 103,373.40 : x
  2. Step 2: Convert to fraction form
    115,426.20/173,139.30 = 103,373.40/x
  3. Step 3: Cross multiply
    115,426.20x = 173,139.30 × 103,373.40
  4. Step 4: Simplify right side
    115,426.20x = 17,897,998,114.62
  5. Step 5: Solve for x
    x = 17,897,998,114.62/115,426.20
  6. Step 6: Final answer
    x = 155,060.10

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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.