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Finding the Fourth Proportional to 115,038.75, 158,753.48 and 64,738.83

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Solution

The fourth proportional to 115,038.75, 158,753.48 and 64,738.83 is: 89,339.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,038.75 : 158,753.48 = 64,738.83 : x
  2. Step 2: Convert to fraction form
    115,038.75/158,753.48 = 64,738.83/x
  3. Step 3: Cross multiply
    115,038.75x = 158,753.48 × 64,738.83
  4. Step 4: Simplify right side
    115,038.75x = 10,277,514,229.93
  5. Step 5: Solve for x
    x = 10,277,514,229.93/115,038.75
  6. Step 6: Final answer
    x = 89,339.59

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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.