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Finding the Fourth Proportional to 178,988.84, 247,005.52 and 98,421.58

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Solution

The fourth proportional to 178,988.84, 247,005.52 and 98,421.58 is: 135,822.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,988.84 : 247,005.52 = 98,421.58 : x
  2. Step 2: Convert to fraction form
    178,988.84/247,005.52 = 98,421.58/x
  3. Step 3: Cross multiply
    178,988.84x = 247,005.52 × 98,421.58
  4. Step 4: Simplify right side
    178,988.84x = 24,310,672,683.55
  5. Step 5: Solve for x
    x = 24,310,672,683.55/178,988.84
  6. Step 6: Final answer
    x = 135,822.29

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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.