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Finding the Fourth Proportional to 140,039.10, 210,019.95 and 38,812.95

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Solution

The fourth proportional to 140,039.10, 210,019.95 and 38,812.95 is: 58,208.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,039.10 : 210,019.95 = 38,812.95 : x
  2. Step 2: Convert to fraction form
    140,039.10/210,019.95 = 38,812.95/x
  3. Step 3: Cross multiply
    140,039.10x = 210,019.95 × 38,812.95
  4. Step 4: Simplify right side
    140,039.10x = 8,151,493,818.35
  5. Step 5: Solve for x
    x = 8,151,493,818.35/140,039.10
  6. Step 6: Final answer
    x = 58,208.70

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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.