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Finding the Fourth Proportional to 140,311.20, 210,985.20 and 117,501.60

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Solution

The fourth proportional to 140,311.20, 210,985.20 and 117,501.60 is: 176,686.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,311.20 : 210,985.20 = 117,501.60 : x
  2. Step 2: Convert to fraction form
    140,311.20/210,985.20 = 117,501.60/x
  3. Step 3: Cross multiply
    140,311.20x = 210,985.20 × 117,501.60
  4. Step 4: Simplify right side
    140,311.20x = 24,791,098,576.32
  5. Step 5: Solve for x
    x = 24,791,098,576.32/140,311.20
  6. Step 6: Final answer
    x = 176,686.53

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1.5x scale

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.