Home / 125,101.47-172,468.41-79,138.25

Finding the Fourth Proportional to 125,101.47, 172,468.41 and 79,138.25

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Solution

The fourth proportional to 125,101.47, 172,468.41 and 79,138.25 is: 109,102.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,101.47 : 172,468.41 = 79,138.25 : x
  2. Step 2: Convert to fraction form
    125,101.47/172,468.41 = 79,138.25/x
  3. Step 3: Cross multiply
    125,101.47x = 172,468.41 × 79,138.25
  4. Step 4: Simplify right side
    125,101.47x = 13,648,847,285.34
  5. Step 5: Solve for x
    x = 13,648,847,285.34/125,101.47
  6. Step 6: Final answer
    x = 109,102.21

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1.5x scale

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.