Home / 117,990.15-162,825.61-64,275.20

Finding the Fourth Proportional to 117,990.15, 162,825.61 and 64,275.20

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Solution

The fourth proportional to 117,990.15, 162,825.61 and 64,275.20 is: 88,699.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,990.15 : 162,825.61 = 64,275.20 : x
  2. Step 2: Convert to fraction form
    117,990.15/162,825.61 = 64,275.20/x
  3. Step 3: Cross multiply
    117,990.15x = 162,825.61 × 64,275.20
  4. Step 4: Simplify right side
    117,990.15x = 10,465,648,283.65
  5. Step 5: Solve for x
    x = 10,465,648,283.65/117,990.15
  6. Step 6: Final answer
    x = 88,699.34

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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.