Home / 145,657.11-218,074.83-77,113.36

Finding the Fourth Proportional to 145,657.11, 218,074.83 and 77,113.36

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Solution

The fourth proportional to 145,657.11, 218,074.83 and 77,113.36 is: 115,452.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,657.11 : 218,074.83 = 77,113.36 : x
  2. Step 2: Convert to fraction form
    145,657.11/218,074.83 = 77,113.36/x
  3. Step 3: Cross multiply
    145,657.11x = 218,074.83 × 77,113.36
  4. Step 4: Simplify right side
    145,657.11x = 16,816,482,872.73
  5. Step 5: Solve for x
    x = 16,816,482,872.73/145,657.11
  6. Step 6: Final answer
    x = 115,452.54

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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.