Home / 153,108.45-229,709.37-78,281.16

Finding the Fourth Proportional to 153,108.45, 229,709.37 and 78,281.16

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Solution

The fourth proportional to 153,108.45, 229,709.37 and 78,281.16 is: 117,445.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,108.45 : 229,709.37 = 78,281.16 : x
  2. Step 2: Convert to fraction form
    153,108.45/229,709.37 = 78,281.16/x
  3. Step 3: Cross multiply
    153,108.45x = 229,709.37 × 78,281.16
  4. Step 4: Simplify right side
    153,108.45x = 17,981,915,946.47
  5. Step 5: Solve for x
    x = 17,981,915,946.47/153,108.45
  6. Step 6: Final answer
    x = 117,445.61

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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.