Home / 99,719.16-137,609.91-54,398.19

Finding the Fourth Proportional to 99,719.16, 137,609.91 and 54,398.19

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Solution

The fourth proportional to 99,719.16, 137,609.91 and 54,398.19 is: 75,068.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,719.16 : 137,609.91 = 54,398.19 : x
  2. Step 2: Convert to fraction form
    99,719.16/137,609.91 = 54,398.19/x
  3. Step 3: Cross multiply
    99,719.16x = 137,609.91 × 54,398.19
  4. Step 4: Simplify right side
    99,719.16x = 7,485,730,030.06
  5. Step 5: Solve for x
    x = 7,485,730,030.06/99,719.16
  6. Step 6: Final answer
    x = 75,068.12

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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.