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Finding the Fourth Proportional to 170,886.12, 235,829.59 and 98,288.90

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Solution

The fourth proportional to 170,886.12, 235,829.59 and 98,288.90 is: 135,642.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,886.12 : 235,829.59 = 98,288.90 : x
  2. Step 2: Convert to fraction form
    170,886.12/235,829.59 = 98,288.90/x
  3. Step 3: Cross multiply
    170,886.12x = 235,829.59 × 98,288.90
  4. Step 4: Simplify right side
    170,886.12x = 23,179,430,988.55
  5. Step 5: Solve for x
    x = 23,179,430,988.55/170,886.12
  6. Step 6: Final answer
    x = 135,642.56

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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.