Home / 97,680.20-146,520.30-77,851.40

Finding the Fourth Proportional to 97,680.20, 146,520.30 and 77,851.40

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Solution

The fourth proportional to 97,680.20, 146,520.30 and 77,851.40 is: 116,777.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,680.20 : 146,520.30 = 77,851.40 : x
  2. Step 2: Convert to fraction form
    97,680.20/146,520.30 = 77,851.40/x
  3. Step 3: Cross multiply
    97,680.20x = 146,520.30 × 77,851.40
  4. Step 4: Simplify right side
    97,680.20x = 11,406,810,483.42
  5. Step 5: Solve for x
    x = 11,406,810,483.42/97,680.20
  6. Step 6: Final answer
    x = 116,777.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.