Home / 124,890.32-172,345.92-68,301.60

Finding the Fourth Proportional to 124,890.32, 172,345.92 and 68,301.60

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Solution

The fourth proportional to 124,890.32, 172,345.92 and 68,301.60 is: 94,254.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,890.32 : 172,345.92 = 68,301.60 : x
  2. Step 2: Convert to fraction form
    124,890.32/172,345.92 = 68,301.60/x
  3. Step 3: Cross multiply
    124,890.32x = 172,345.92 × 68,301.60
  4. Step 4: Simplify right side
    124,890.32x = 11,771,502,089.47
  5. Step 5: Solve for x
    x = 11,771,502,089.47/124,890.32
  6. Step 6: Final answer
    x = 94,254.72

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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.