Home / 69,138.16-103,747.56-29,154.72

Finding the Fourth Proportional to 69,138.16, 103,747.56 and 29,154.72

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Solution

The fourth proportional to 69,138.16, 103,747.56 and 29,154.72 is: 43,749.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,138.16 : 103,747.56 = 29,154.72 : x
  2. Step 2: Convert to fraction form
    69,138.16/103,747.56 = 29,154.72/x
  3. Step 3: Cross multiply
    69,138.16x = 103,747.56 × 29,154.72
  4. Step 4: Simplify right side
    69,138.16x = 3,024,731,062.48
  5. Step 5: Solve for x
    x = 3,024,731,062.48/69,138.16
  6. Step 6: Final answer
    x = 43,749.08

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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.