Home / 155,974.62-215,145.90-102,263.12

Finding the Fourth Proportional to 155,974.62, 215,145.90 and 102,263.12

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Solution

The fourth proportional to 155,974.62, 215,145.90 and 102,263.12 is: 141,058.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,974.62 : 215,145.90 = 102,263.12 : x
  2. Step 2: Convert to fraction form
    155,974.62/215,145.90 = 102,263.12/x
  3. Step 3: Cross multiply
    155,974.62x = 215,145.90 × 102,263.12
  4. Step 4: Simplify right side
    155,974.62x = 22,001,490,989.21
  5. Step 5: Solve for x
    x = 22,001,490,989.21/155,974.62
  6. Step 6: Final answer
    x = 141,058.15

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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.