Home / 153,581.12-211,959.18-85,604.32

Finding the Fourth Proportional to 153,581.12, 211,959.18 and 85,604.32

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Solution

The fourth proportional to 153,581.12, 211,959.18 and 85,604.32 is: 118,143.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,581.12 : 211,959.18 = 85,604.32 : x
  2. Step 2: Convert to fraction form
    153,581.12/211,959.18 = 85,604.32/x
  3. Step 3: Cross multiply
    153,581.12x = 211,959.18 × 85,604.32
  4. Step 4: Simplify right side
    153,581.12x = 18,144,621,471.66
  5. Step 5: Solve for x
    x = 18,144,621,471.66/153,581.12
  6. Step 6: Final answer
    x = 118,143.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.