Home / 99,766.77-137,678.54-54,445.76

Finding the Fourth Proportional to 99,766.77, 137,678.54 and 54,445.76

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Solution

The fourth proportional to 99,766.77, 137,678.54 and 54,445.76 is: 75,135.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,766.77 : 137,678.54 = 54,445.76 : x
  2. Step 2: Convert to fraction form
    99,766.77/137,678.54 = 54,445.76/x
  3. Step 3: Cross multiply
    99,766.77x = 137,678.54 × 54,445.76
  4. Step 4: Simplify right side
    99,766.77x = 7,496,011,785.37
  5. Step 5: Solve for x
    x = 7,496,011,785.37/99,766.77
  6. Step 6: Final answer
    x = 75,135.36

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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.