Home / 157,085.12-216,778.38-85,465.63

Finding the Fourth Proportional to 157,085.12, 216,778.38 and 85,465.63

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Solution

The fourth proportional to 157,085.12, 216,778.38 and 85,465.63 is: 117,943.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,085.12 : 216,778.38 = 85,465.63 : x
  2. Step 2: Convert to fraction form
    157,085.12/216,778.38 = 85,465.63/x
  3. Step 3: Cross multiply
    157,085.12x = 216,778.38 × 85,465.63
  4. Step 4: Simplify right side
    157,085.12x = 18,527,100,767.56
  5. Step 5: Solve for x
    x = 18,527,100,767.56/157,085.12
  6. Step 6: Final answer
    x = 117,943.06

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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.