Home / 99,438.18-137,275.47-76,726.14

Finding the Fourth Proportional to 99,438.18, 137,275.47 and 76,726.14

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Solution

The fourth proportional to 99,438.18, 137,275.47 and 76,726.14 is: 105,921.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,438.18 : 137,275.47 = 76,726.14 : x
  2. Step 2: Convert to fraction form
    99,438.18/137,275.47 = 76,726.14/x
  3. Step 3: Cross multiply
    99,438.18x = 137,275.47 × 76,726.14
  4. Step 4: Simplify right side
    99,438.18x = 10,532,616,929.79
  5. Step 5: Solve for x
    x = 10,532,616,929.79/99,438.18
  6. Step 6: Final answer
    x = 105,921.26

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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.