Home / 103,439.60-155,159.40-50,838.20

Finding the Fourth Proportional to 103,439.60, 155,159.40 and 50,838.20

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Solution

The fourth proportional to 103,439.60, 155,159.40 and 50,838.20 is: 76,257.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,439.60 : 155,159.40 = 50,838.20 : x
  2. Step 2: Convert to fraction form
    103,439.60/155,159.40 = 50,838.20/x
  3. Step 3: Cross multiply
    103,439.60x = 155,159.40 × 50,838.20
  4. Step 4: Simplify right side
    103,439.60x = 7,888,024,609.08
  5. Step 5: Solve for x
    x = 7,888,024,609.08/103,439.60
  6. Step 6: Final answer
    x = 76,257.30

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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.