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Finding the Fourth Proportional to 170,909.84, 235,848.28 and 98,307.20

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Solution

The fourth proportional to 170,909.84, 235,848.28 and 98,307.20 is: 135,659.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,909.84 : 235,848.28 = 98,307.20 : x
  2. Step 2: Convert to fraction form
    170,909.84/235,848.28 = 98,307.20/x
  3. Step 3: Cross multiply
    170,909.84x = 235,848.28 × 98,307.20
  4. Step 4: Simplify right side
    170,909.84x = 23,185,584,031.62
  5. Step 5: Solve for x
    x = 23,185,584,031.62/170,909.84
  6. Step 6: Final answer
    x = 135,659.74

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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.