Home / 125,015.18-172,478.04-71,261.42

Finding the Fourth Proportional to 125,015.18, 172,478.04 and 71,261.42

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Solution

The fourth proportional to 125,015.18, 172,478.04 and 71,261.42 is: 98,316.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,015.18 : 172,478.04 = 71,261.42 : x
  2. Step 2: Convert to fraction form
    125,015.18/172,478.04 = 71,261.42/x
  3. Step 3: Cross multiply
    125,015.18x = 172,478.04 × 71,261.42
  4. Step 4: Simplify right side
    125,015.18x = 12,291,029,186.83
  5. Step 5: Solve for x
    x = 12,291,029,186.83/125,015.18
  6. Step 6: Final answer
    x = 98,316.30

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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.