Home / 125,115.25-172,662.40-70,663.05

Finding the Fourth Proportional to 125,115.25, 172,662.40 and 70,663.05

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Solution

The fourth proportional to 125,115.25, 172,662.40 and 70,663.05 is: 97,516.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,115.25 : 172,662.40 = 70,663.05 : x
  2. Step 2: Convert to fraction form
    125,115.25/172,662.40 = 70,663.05/x
  3. Step 3: Cross multiply
    125,115.25x = 172,662.40 × 70,663.05
  4. Step 4: Simplify right side
    125,115.25x = 12,200,851,958.75
  5. Step 5: Solve for x
    x = 12,200,851,958.75/125,115.25
  6. Step 6: Final answer
    x = 97,516.90

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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.