Home / 157,909.24-217,915.33-86,289.27

Finding the Fourth Proportional to 157,909.24, 217,915.33 and 86,289.27

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Solution

The fourth proportional to 157,909.24, 217,915.33 and 86,289.27 is: 119,079.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,909.24 : 217,915.33 = 86,289.27 : x
  2. Step 2: Convert to fraction form
    157,909.24/217,915.33 = 86,289.27/x
  3. Step 3: Cross multiply
    157,909.24x = 217,915.33 × 86,289.27
  4. Step 4: Simplify right side
    157,909.24x = 18,803,754,747.51
  5. Step 5: Solve for x
    x = 18,803,754,747.51/157,909.24
  6. Step 6: Final answer
    x = 119,079.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.