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Finding the Fourth Proportional to 159,547.95, 220,177.51 and 87,928.16

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Solution

The fourth proportional to 159,547.95, 220,177.51 and 87,928.16 is: 121,341.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,547.95 : 220,177.51 = 87,928.16 : x
  2. Step 2: Convert to fraction form
    159,547.95/220,177.51 = 87,928.16/x
  3. Step 3: Cross multiply
    159,547.95x = 220,177.51 × 87,928.16
  4. Step 4: Simplify right side
    159,547.95x = 19,359,802,006.97
  5. Step 5: Solve for x
    x = 19,359,802,006.97/159,547.95
  6. Step 6: Final answer
    x = 121,341.59

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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.