Home / 118,077.20-177,115.80-99,706.40

Finding the Fourth Proportional to 118,077.20, 177,115.80 and 99,706.40

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Solution

The fourth proportional to 118,077.20, 177,115.80 and 99,706.40 is: 149,559.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,077.20 : 177,115.80 = 99,706.40 : x
  2. Step 2: Convert to fraction form
    118,077.20/177,115.80 = 99,706.40/x
  3. Step 3: Cross multiply
    118,077.20x = 177,115.80 × 99,706.40
  4. Step 4: Simplify right side
    118,077.20x = 17,659,578,801.12
  5. Step 5: Solve for x
    x = 17,659,578,801.12/118,077.20
  6. Step 6: Final answer
    x = 149,559.60

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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.