Home / 137,707.80-190,045.14-77,282.30

Finding the Fourth Proportional to 137,707.80, 190,045.14 and 77,282.30

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Solution

The fourth proportional to 137,707.80, 190,045.14 and 77,282.30 is: 106,654.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,707.80 : 190,045.14 = 77,282.30 : x
  2. Step 2: Convert to fraction form
    137,707.80/190,045.14 = 77,282.30/x
  3. Step 3: Cross multiply
    137,707.80x = 190,045.14 × 77,282.30
  4. Step 4: Simplify right side
    137,707.80x = 14,687,125,708.33
  5. Step 5: Solve for x
    x = 14,687,125,708.33/137,707.80
  6. Step 6: Final answer
    x = 106,654.28

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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.