Home / 84,155.15-126,014.03-66,513.35

Finding the Fourth Proportional to 84,155.15, 126,014.03 and 66,513.35

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Solution

The fourth proportional to 84,155.15, 126,014.03 and 66,513.35 is: 99,597.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,155.15 : 126,014.03 = 66,513.35 : x
  2. Step 2: Convert to fraction form
    84,155.15/126,014.03 = 66,513.35/x
  3. Step 3: Cross multiply
    84,155.15x = 126,014.03 × 66,513.35
  4. Step 4: Simplify right side
    84,155.15x = 8,381,614,949.73
  5. Step 5: Solve for x
    x = 8,381,614,949.73/84,155.15
  6. Step 6: Final answer
    x = 99,597.17

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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.