Home / 115,275.36-172,864.08-45,143.52

Finding the Fourth Proportional to 115,275.36, 172,864.08 and 45,143.52

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Solution

The fourth proportional to 115,275.36, 172,864.08 and 45,143.52 is: 67,696.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,275.36 : 172,864.08 = 45,143.52 : x
  2. Step 2: Convert to fraction form
    115,275.36/172,864.08 = 45,143.52/x
  3. Step 3: Cross multiply
    115,275.36x = 172,864.08 × 45,143.52
  4. Step 4: Simplify right side
    115,275.36x = 7,803,693,052.76
  5. Step 5: Solve for x
    x = 7,803,693,052.76/115,275.36
  6. Step 6: Final answer
    x = 67,696.11

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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.