Home / 159,515.26-220,140.90-87,895.28

Finding the Fourth Proportional to 159,515.26, 220,140.90 and 87,895.28

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Solution

The fourth proportional to 159,515.26, 220,140.90 and 87,895.28 is: 121,300.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,515.26 : 220,140.90 = 87,895.28 : x
  2. Step 2: Convert to fraction form
    159,515.26/220,140.90 = 87,895.28/x
  3. Step 3: Cross multiply
    159,515.26x = 220,140.90 × 87,895.28
  4. Step 4: Simplify right side
    159,515.26x = 19,349,346,044.95
  5. Step 5: Solve for x
    x = 19,349,346,044.95/159,515.26
  6. Step 6: Final answer
    x = 121,300.91

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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.