Home / 159,348.24-219,898.80-87,726.78

Finding the Fourth Proportional to 159,348.24, 219,898.80 and 87,726.78

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Solution

The fourth proportional to 159,348.24, 219,898.80 and 87,726.78 is: 121,061.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,348.24 : 219,898.80 = 87,726.78 : x
  2. Step 2: Convert to fraction form
    159,348.24/219,898.80 = 87,726.78/x
  3. Step 3: Cross multiply
    159,348.24x = 219,898.80 × 87,726.78
  4. Step 4: Simplify right side
    159,348.24x = 19,291,013,649.86
  5. Step 5: Solve for x
    x = 19,291,013,649.86/159,348.24
  6. Step 6: Final answer
    x = 121,061.98

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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.