Home / 153,109.16-229,710.41-78,281.84

Finding the Fourth Proportional to 153,109.16, 229,710.41 and 78,281.84

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Solution

The fourth proportional to 153,109.16, 229,710.41 and 78,281.84 is: 117,446.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,109.16 : 229,710.41 = 78,281.84 : x
  2. Step 2: Convert to fraction form
    153,109.16/229,710.41 = 78,281.84/x
  3. Step 3: Cross multiply
    153,109.16x = 229,710.41 × 78,281.84
  4. Step 4: Simplify right side
    153,109.16x = 17,982,153,818.21
  5. Step 5: Solve for x
    x = 17,982,153,818.21/153,109.16
  6. Step 6: Final answer
    x = 117,446.62

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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.