Home / 153,109.71-229,711.25-78,282.41

Finding the Fourth Proportional to 153,109.71, 229,711.25 and 78,282.41

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Solution

The fourth proportional to 153,109.71, 229,711.25 and 78,282.41 is: 117,447.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,109.71 : 229,711.25 = 78,282.41 : x
  2. Step 2: Convert to fraction form
    153,109.71/229,711.25 = 78,282.41/x
  3. Step 3: Cross multiply
    153,109.71x = 229,711.25 × 78,282.41
  4. Step 4: Simplify right side
    153,109.71x = 17,982,349,301.26
  5. Step 5: Solve for x
    x = 17,982,349,301.26/153,109.71
  6. Step 6: Final answer
    x = 117,447.48

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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.