Home / 179,840.70-269,437.05-86,139.90

Finding the Fourth Proportional to 179,840.70, 269,437.05 and 86,139.90

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Solution

The fourth proportional to 179,840.70, 269,437.05 and 86,139.90 is: 129,054.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,840.70 : 269,437.05 = 86,139.90 : x
  2. Step 2: Convert to fraction form
    179,840.70/269,437.05 = 86,139.90/x
  3. Step 3: Cross multiply
    179,840.70x = 269,437.05 × 86,139.90
  4. Step 4: Simplify right side
    179,840.70x = 23,209,280,543.30
  5. Step 5: Solve for x
    x = 23,209,280,543.30/179,840.70
  6. Step 6: Final answer
    x = 129,054.66

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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.