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Finding the Fourth Proportional to 140,011.20, 210,016.80 and 118,141.20

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Solution

The fourth proportional to 140,011.20, 210,016.80 and 118,141.20 is: 177,211.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,011.20 : 210,016.80 = 118,141.20 : x
  2. Step 2: Convert to fraction form
    140,011.20/210,016.80 = 118,141.20/x
  3. Step 3: Cross multiply
    140,011.20x = 210,016.80 × 118,141.20
  4. Step 4: Simplify right side
    140,011.20x = 24,811,636,772.16
  5. Step 5: Solve for x
    x = 24,811,636,772.16/140,011.20
  6. Step 6: Final answer
    x = 177,211.80

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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.