Home / 99,639.30-137,501.09-54,316.28

Finding the Fourth Proportional to 99,639.30, 137,501.09 and 54,316.28

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Solution

The fourth proportional to 99,639.30, 137,501.09 and 54,316.28 is: 74,955.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,639.30 : 137,501.09 = 54,316.28 : x
  2. Step 2: Convert to fraction form
    99,639.30/137,501.09 = 54,316.28/x
  3. Step 3: Cross multiply
    99,639.30x = 137,501.09 × 54,316.28
  4. Step 4: Simplify right side
    99,639.30x = 7,468,547,668.66
  5. Step 5: Solve for x
    x = 7,468,547,668.66/99,639.30
  6. Step 6: Final answer
    x = 74,955.85

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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.