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Finding the Fourth Proportional to 140,143.01, 210,207.66 and 40,302.41

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Solution

The fourth proportional to 140,143.01, 210,207.66 and 40,302.41 is: 60,451.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,143.01 : 210,207.66 = 40,302.41 : x
  2. Step 2: Convert to fraction form
    140,143.01/210,207.66 = 40,302.41/x
  3. Step 3: Cross multiply
    140,143.01x = 210,207.66 × 40,302.41
  4. Step 4: Simplify right side
    140,143.01x = 8,471,875,298.46
  5. Step 5: Solve for x
    x = 8,471,875,298.46/140,143.01
  6. Step 6: Final answer
    x = 60,451.64

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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.