Home / 99,702.90-149,641.83-55,379.70

Finding the Fourth Proportional to 99,702.90, 149,641.83 and 55,379.70

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Solution

The fourth proportional to 99,702.90, 149,641.83 and 55,379.70 is: 83,118.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,702.90 : 149,641.83 = 55,379.70 : x
  2. Step 2: Convert to fraction form
    99,702.90/149,641.83 = 55,379.70/x
  3. Step 3: Cross multiply
    99,702.90x = 149,641.83 × 55,379.70
  4. Step 4: Simplify right side
    99,702.90x = 8,287,119,652.85
  5. Step 5: Solve for x
    x = 8,287,119,652.85/99,702.90
  6. Step 6: Final answer
    x = 83,118.14

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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.