Home / 117,690.66-162,419.04-72,371.16

Finding the Fourth Proportional to 117,690.66, 162,419.04 and 72,371.16

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Solution

The fourth proportional to 117,690.66, 162,419.04 and 72,371.16 is: 99,875.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,690.66 : 162,419.04 = 72,371.16 : x
  2. Step 2: Convert to fraction form
    117,690.66/162,419.04 = 72,371.16/x
  3. Step 3: Cross multiply
    117,690.66x = 162,419.04 × 72,371.16
  4. Step 4: Simplify right side
    117,690.66x = 11,754,454,330.89
  5. Step 5: Solve for x
    x = 11,754,454,330.89/117,690.66
  6. Step 6: Final answer
    x = 99,875.85

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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.