Home / 118,120.60-177,115.16-70,108.72

Finding the Fourth Proportional to 118,120.60, 177,115.16 and 70,108.72

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Solution

The fourth proportional to 118,120.60, 177,115.16 and 70,108.72 is: 105,124.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,120.60 : 177,115.16 = 70,108.72 : x
  2. Step 2: Convert to fraction form
    118,120.60/177,115.16 = 70,108.72/x
  3. Step 3: Cross multiply
    118,120.60x = 177,115.16 × 70,108.72
  4. Step 4: Simplify right side
    118,120.60x = 12,417,317,160.20
  5. Step 5: Solve for x
    x = 12,417,317,160.20/118,120.60
  6. Step 6: Final answer
    x = 105,124.06

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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.