Home / 157,038.20-216,716.28-85,422.05

Finding the Fourth Proportional to 157,038.20, 216,716.28 and 85,422.05

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Solution

The fourth proportional to 157,038.20, 216,716.28 and 85,422.05 is: 117,884.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,038.20 : 216,716.28 = 85,422.05 : x
  2. Step 2: Convert to fraction form
    157,038.20/216,716.28 = 85,422.05/x
  3. Step 3: Cross multiply
    157,038.20x = 216,716.28 × 85,422.05
  4. Step 4: Simplify right side
    157,038.20x = 18,512,348,905.97
  5. Step 5: Solve for x
    x = 18,512,348,905.97/157,038.20
  6. Step 6: Final answer
    x = 117,884.37

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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.