Home / 115,387.92-172,979.28-45,316.08

Finding the Fourth Proportional to 115,387.92, 172,979.28 and 45,316.08

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Solution

The fourth proportional to 115,387.92, 172,979.28 and 45,316.08 is: 67,933.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,387.92 : 172,979.28 = 45,316.08 : x
  2. Step 2: Convert to fraction form
    115,387.92/172,979.28 = 45,316.08/x
  3. Step 3: Cross multiply
    115,387.92x = 172,979.28 × 45,316.08
  4. Step 4: Simplify right side
    115,387.92x = 7,838,742,890.82
  5. Step 5: Solve for x
    x = 7,838,742,890.82/115,387.92
  6. Step 6: Final answer
    x = 67,933.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.