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Finding the Fourth Proportional to 103,343.10, 155,014.65 and 67,913.70

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Solution

The fourth proportional to 103,343.10, 155,014.65 and 67,913.70 is: 101,870.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,343.10 : 155,014.65 = 67,913.70 : x
  2. Step 2: Convert to fraction form
    103,343.10/155,014.65 = 67,913.70/x
  3. Step 3: Cross multiply
    103,343.10x = 155,014.65 × 67,913.70
  4. Step 4: Simplify right side
    103,343.10x = 10,527,618,435.71
  5. Step 5: Solve for x
    x = 10,527,618,435.71/103,343.10
  6. Step 6: Final answer
    x = 101,870.55

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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.