Home / 155,810.24-215,381.36-138,981.27

Finding the Fourth Proportional to 155,810.24, 215,381.36 and 138,981.27

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Solution

The fourth proportional to 155,810.24, 215,381.36 and 138,981.27 is: 192,118.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,810.24 : 215,381.36 = 138,981.27 : x
  2. Step 2: Convert to fraction form
    155,810.24/215,381.36 = 138,981.27/x
  3. Step 3: Cross multiply
    155,810.24x = 215,381.36 × 138,981.27
  4. Step 4: Simplify right side
    155,810.24x = 29,933,974,947.13
  5. Step 5: Solve for x
    x = 29,933,974,947.13/155,810.24
  6. Step 6: Final answer
    x = 192,118.15

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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.