Home / 99,147.20-136,789.84-56,675.68

Finding the Fourth Proportional to 99,147.20, 136,789.84 and 56,675.68

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Solution

The fourth proportional to 99,147.20, 136,789.84 and 56,675.68 is: 78,193.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,147.20 : 136,789.84 = 56,675.68 : x
  2. Step 2: Convert to fraction form
    99,147.20/136,789.84 = 56,675.68/x
  3. Step 3: Cross multiply
    99,147.20x = 136,789.84 × 56,675.68
  4. Step 4: Simplify right side
    99,147.20x = 7,752,657,199.09
  5. Step 5: Solve for x
    x = 7,752,657,199.09/99,147.20
  6. Step 6: Final answer
    x = 78,193.41

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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.