Home / 157,022.21-216,691.67-85,402.76

Finding the Fourth Proportional to 157,022.21, 216,691.67 and 85,402.76

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Solution

The fourth proportional to 157,022.21, 216,691.67 and 85,402.76 is: 117,856.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,022.21 : 216,691.67 = 85,402.76 : x
  2. Step 2: Convert to fraction form
    157,022.21/216,691.67 = 85,402.76/x
  3. Step 3: Cross multiply
    157,022.21x = 216,691.67 × 85,402.76
  4. Step 4: Simplify right side
    157,022.21x = 18,506,065,817.06
  5. Step 5: Solve for x
    x = 18,506,065,817.06/157,022.21
  6. Step 6: Final answer
    x = 117,856.36

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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.