Home / 112,988.82-155,908.28-72,757.13

Finding the Fourth Proportional to 112,988.82, 155,908.28 and 72,757.13

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Solution

The fourth proportional to 112,988.82, 155,908.28 and 72,757.13 is: 100,394.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,988.82 : 155,908.28 = 72,757.13 : x
  2. Step 2: Convert to fraction form
    112,988.82/155,908.28 = 72,757.13/x
  3. Step 3: Cross multiply
    112,988.82x = 155,908.28 × 72,757.13
  4. Step 4: Simplify right side
    112,988.82x = 11,343,438,632.25
  5. Step 5: Solve for x
    x = 11,343,438,632.25/112,988.82
  6. Step 6: Final answer
    x = 100,394.35

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1.5x scale

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.