Home / 137,882.87-190,271.05-77,456.06

Finding the Fourth Proportional to 137,882.87, 190,271.05 and 77,456.06

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Solution

The fourth proportional to 137,882.87, 190,271.05 and 77,456.06 is: 106,885.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,882.87 : 190,271.05 = 77,456.06 : x
  2. Step 2: Convert to fraction form
    137,882.87/190,271.05 = 77,456.06/x
  3. Step 3: Cross multiply
    137,882.87x = 190,271.05 × 77,456.06
  4. Step 4: Simplify right side
    137,882.87x = 14,737,644,720.07
  5. Step 5: Solve for x
    x = 14,737,644,720.07/137,882.87
  6. Step 6: Final answer
    x = 106,885.25

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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.