Home / 138,298.50-207,401.58-54,036.72

Finding the Fourth Proportional to 138,298.50, 207,401.58 and 54,036.72

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Solution

The fourth proportional to 138,298.50, 207,401.58 and 54,036.72 is: 81,037.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,298.50 : 207,401.58 = 54,036.72 : x
  2. Step 2: Convert to fraction form
    138,298.50/207,401.58 = 54,036.72/x
  3. Step 3: Cross multiply
    138,298.50x = 207,401.58 × 54,036.72
  4. Step 4: Simplify right side
    138,298.50x = 11,207,301,106.02
  5. Step 5: Solve for x
    x = 11,207,301,106.02/138,298.50
  6. Step 6: Final answer
    x = 81,037.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.