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Finding the Fourth Proportional to 151,871.44, 209,547.12 and 88,170.88

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Solution

The fourth proportional to 151,871.44, 209,547.12 and 88,170.88 is: 121,655.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,871.44 : 209,547.12 = 88,170.88 : x
  2. Step 2: Convert to fraction form
    151,871.44/209,547.12 = 88,170.88/x
  3. Step 3: Cross multiply
    151,871.44x = 209,547.12 × 88,170.88
  4. Step 4: Simplify right side
    151,871.44x = 18,475,953,971.87
  5. Step 5: Solve for x
    x = 18,475,953,971.87/151,871.44
  6. Step 6: Final answer
    x = 121,655.22

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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.