Home / 115,612.89-159,543.36-64,624.20

Finding the Fourth Proportional to 115,612.89, 159,543.36 and 64,624.20

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Solution

The fourth proportional to 115,612.89, 159,543.36 and 64,624.20 is: 89,180.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,612.89 : 159,543.36 = 64,624.20 : x
  2. Step 2: Convert to fraction form
    115,612.89/159,543.36 = 64,624.20/x
  3. Step 3: Cross multiply
    115,612.89x = 159,543.36 × 64,624.20
  4. Step 4: Simplify right side
    115,612.89x = 10,310,362,005.31
  5. Step 5: Solve for x
    x = 10,310,362,005.31/115,612.89
  6. Step 6: Final answer
    x = 89,180.04

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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.