Home / 153,141.44-229,854.31-78,315.05

Finding the Fourth Proportional to 153,141.44, 229,854.31 and 78,315.05

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Solution

The fourth proportional to 153,141.44, 229,854.31 and 78,315.05 is: 117,545.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,141.44 : 229,854.31 = 78,315.05 : x
  2. Step 2: Convert to fraction form
    153,141.44/229,854.31 = 78,315.05/x
  3. Step 3: Cross multiply
    153,141.44x = 229,854.31 × 78,315.05
  4. Step 4: Simplify right side
    153,141.44x = 18,001,052,159.21
  5. Step 5: Solve for x
    x = 18,001,052,159.21/153,141.44
  6. Step 6: Final answer
    x = 117,545.28

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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.