Home / 125,438.04-173,185.56-77,742

Finding the Fourth Proportional to 125,438.04, 173,185.56 and 77,742

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Solution

The fourth proportional to 125,438.04, 173,185.56 and 77,742 is: 107,334.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,438.04 : 173,185.56 = 77,742 : x
  2. Step 2: Convert to fraction form
    125,438.04/173,185.56 = 77,742/x
  3. Step 3: Cross multiply
    125,438.04x = 173,185.56 × 77,742
  4. Step 4: Simplify right side
    125,438.04x = 13,463,791,805.52
  5. Step 5: Solve for x
    x = 13,463,791,805.52/125,438.04
  6. Step 6: Final answer
    x = 107,334.20

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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.