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Finding the Fourth Proportional to 178,987.95, 247,004.28 and 98,420.67

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Solution

The fourth proportional to 178,987.95, 247,004.28 and 98,420.67 is: 135,821.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,987.95 : 247,004.28 = 98,420.67 : x
  2. Step 2: Convert to fraction form
    178,987.95/247,004.28 = 98,420.67/x
  3. Step 3: Cross multiply
    178,987.95x = 247,004.28 × 98,420.67
  4. Step 4: Simplify right side
    178,987.95x = 24,310,326,730.47
  5. Step 5: Solve for x
    x = 24,310,326,730.47/178,987.95
  6. Step 6: Final answer
    x = 135,821.02

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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.