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Finding the Fourth Proportional to 140,602.40, 211,108.40 and 99,232.80

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Solution

The fourth proportional to 140,602.40, 211,108.40 and 99,232.80 is: 148,993.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,602.40 : 211,108.40 = 99,232.80 : x
  2. Step 2: Convert to fraction form
    140,602.40/211,108.40 = 99,232.80/x
  3. Step 3: Cross multiply
    140,602.40x = 211,108.40 × 99,232.80
  4. Step 4: Simplify right side
    140,602.40x = 20,948,877,635.52
  5. Step 5: Solve for x
    x = 20,948,877,635.52/140,602.40
  6. Step 6: Final answer
    x = 148,993.74

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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.