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Finding the Fourth Proportional to 140,661.76, 210,992.68 and 42,165.76

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Solution

The fourth proportional to 140,661.76, 210,992.68 and 42,165.76 is: 63,248.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,661.76 : 210,992.68 = 42,165.76 : x
  2. Step 2: Convert to fraction form
    140,661.76/210,992.68 = 42,165.76/x
  3. Step 3: Cross multiply
    140,661.76x = 210,992.68 × 42,165.76
  4. Step 4: Simplify right side
    140,661.76x = 8,896,666,706.64
  5. Step 5: Solve for x
    x = 8,896,666,706.64/140,661.76
  6. Step 6: Final answer
    x = 63,248.65

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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.