Home / 138,948.01-191,757.98-78,524.24

Finding the Fourth Proportional to 138,948.01, 191,757.98 and 78,524.24

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Solution

The fourth proportional to 138,948.01, 191,757.98 and 78,524.24 is: 108,368.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,948.01 : 191,757.98 = 78,524.24 : x
  2. Step 2: Convert to fraction form
    138,948.01/191,757.98 = 78,524.24/x
  3. Step 3: Cross multiply
    138,948.01x = 191,757.98 × 78,524.24
  4. Step 4: Simplify right side
    138,948.01x = 15,057,648,880.96
  5. Step 5: Solve for x
    x = 15,057,648,880.96/138,948.01
  6. Step 6: Final answer
    x = 108,368.94

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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.