Home / 153,107.45-229,707.87-78,280.16

Finding the Fourth Proportional to 153,107.45, 229,707.87 and 78,280.16

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Solution

The fourth proportional to 153,107.45, 229,707.87 and 78,280.16 is: 117,444.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,107.45 : 229,707.87 = 78,280.16 : x
  2. Step 2: Convert to fraction form
    153,107.45/229,707.87 = 78,280.16/x
  3. Step 3: Cross multiply
    153,107.45x = 229,707.87 × 78,280.16
  4. Step 4: Simplify right side
    153,107.45x = 17,981,567,374.77
  5. Step 5: Solve for x
    x = 17,981,567,374.77/153,107.45
  6. Step 6: Final answer
    x = 117,444.11

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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.