Home / 103,799.20-155,698.80-66,474.40

Finding the Fourth Proportional to 103,799.20, 155,698.80 and 66,474.40

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Solution

The fourth proportional to 103,799.20, 155,698.80 and 66,474.40 is: 99,711.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,799.20 : 155,698.80 = 66,474.40 : x
  2. Step 2: Convert to fraction form
    103,799.20/155,698.80 = 66,474.40/x
  3. Step 3: Cross multiply
    103,799.20x = 155,698.80 × 66,474.40
  4. Step 4: Simplify right side
    103,799.20x = 10,349,984,310.72
  5. Step 5: Solve for x
    x = 10,349,984,310.72/103,799.20
  6. Step 6: Final answer
    x = 99,711.60

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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.