Home / 159,140.48-219,608.84-87,520.28

Finding the Fourth Proportional to 159,140.48, 219,608.84 and 87,520.28

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Solution

The fourth proportional to 159,140.48, 219,608.84 and 87,520.28 is: 120,775.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,140.48 : 219,608.84 = 87,520.28 : x
  2. Step 2: Convert to fraction form
    159,140.48/219,608.84 = 87,520.28/x
  3. Step 3: Cross multiply
    159,140.48x = 219,608.84 × 87,520.28
  4. Step 4: Simplify right side
    159,140.48x = 19,220,226,729.67
  5. Step 5: Solve for x
    x = 19,220,226,729.67/159,140.48
  6. Step 6: Final answer
    x = 120,775.22

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1.5x scale

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.