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Finding the Fourth Proportional to 140,070.65, 210,100.50 and 40,230.45

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Solution

The fourth proportional to 140,070.65, 210,100.50 and 40,230.45 is: 60,344.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,070.65 : 210,100.50 = 40,230.45 : x
  2. Step 2: Convert to fraction form
    140,070.65/210,100.50 = 40,230.45/x
  3. Step 3: Cross multiply
    140,070.65x = 210,100.50 × 40,230.45
  4. Step 4: Simplify right side
    140,070.65x = 8,452,437,660.23
  5. Step 5: Solve for x
    x = 8,452,437,660.23/140,070.65
  6. Step 6: Final answer
    x = 60,344.10

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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.