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Finding the Fourth Proportional to 110,798.72, 152,718.12 and 78,491.88

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Solution

The fourth proportional to 110,798.72, 152,718.12 and 78,491.88 is: 108,188.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,798.72 : 152,718.12 = 78,491.88 : x
  2. Step 2: Convert to fraction form
    110,798.72/152,718.12 = 78,491.88/x
  3. Step 3: Cross multiply
    110,798.72x = 152,718.12 × 78,491.88
  4. Step 4: Simplify right side
    110,798.72x = 11,987,132,348.87
  5. Step 5: Solve for x
    x = 11,987,132,348.87/110,798.72
  6. Step 6: Final answer
    x = 108,188.36

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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.