Home / 151,715.28-209,363.16-83,731.36

Finding the Fourth Proportional to 151,715.28, 209,363.16 and 83,731.36

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Solution

The fourth proportional to 151,715.28, 209,363.16 and 83,731.36 is: 115,547.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,715.28 : 209,363.16 = 83,731.36 : x
  2. Step 2: Convert to fraction form
    151,715.28/209,363.16 = 83,731.36/x
  3. Step 3: Cross multiply
    151,715.28x = 209,363.16 × 83,731.36
  4. Step 4: Simplify right side
    151,715.28x = 17,530,262,120.70
  5. Step 5: Solve for x
    x = 17,530,262,120.70/151,715.28
  6. Step 6: Final answer
    x = 115,547.11

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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.