Home / 131,726.70-181,781.01-75,139.02

Finding the Fourth Proportional to 131,726.70, 181,781.01 and 75,139.02

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Solution

The fourth proportional to 131,726.70, 181,781.01 and 75,139.02 is: 103,690.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,726.70 : 181,781.01 = 75,139.02 : x
  2. Step 2: Convert to fraction form
    131,726.70/181,781.01 = 75,139.02/x
  3. Step 3: Cross multiply
    131,726.70x = 181,781.01 × 75,139.02
  4. Step 4: Simplify right side
    131,726.70x = 13,658,846,946.01
  5. Step 5: Solve for x
    x = 13,658,846,946.01/131,726.70
  6. Step 6: Final answer
    x = 103,690.80

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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.