Home / 118,870.12-177,242.45-115,604.20

Finding the Fourth Proportional to 118,870.12, 177,242.45 and 115,604.20

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Solution

The fourth proportional to 118,870.12, 177,242.45 and 115,604.20 is: 172,372.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,870.12 : 177,242.45 = 115,604.20 : x
  2. Step 2: Convert to fraction form
    118,870.12/177,242.45 = 115,604.20/x
  3. Step 3: Cross multiply
    118,870.12x = 177,242.45 × 115,604.20
  4. Step 4: Simplify right side
    118,870.12x = 20,489,971,638.29
  5. Step 5: Solve for x
    x = 20,489,971,638.29/118,870.12
  6. Step 6: Final answer
    x = 172,372.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.