Home / 137,091.74-205,637.60-77,124.20

Finding the Fourth Proportional to 137,091.74, 205,637.60 and 77,124.20

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Solution

The fourth proportional to 137,091.74, 205,637.60 and 77,124.20 is: 115,686.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,091.74 : 205,637.60 = 77,124.20 : x
  2. Step 2: Convert to fraction form
    137,091.74/205,637.60 = 77,124.20/x
  3. Step 3: Cross multiply
    137,091.74x = 205,637.60 × 77,124.20
  4. Step 4: Simplify right side
    137,091.74x = 15,859,635,389.92
  5. Step 5: Solve for x
    x = 15,859,635,389.92/137,091.74
  6. Step 6: Final answer
    x = 115,686.29

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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.