Home / 113,622.21-157,082.09-85,278.69

Finding the Fourth Proportional to 113,622.21, 157,082.09 and 85,278.69

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Solution

The fourth proportional to 113,622.21, 157,082.09 and 85,278.69 is: 117,897.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,622.21 : 157,082.09 = 85,278.69 : x
  2. Step 2: Convert to fraction form
    113,622.21/157,082.09 = 85,278.69/x
  3. Step 3: Cross multiply
    113,622.21x = 157,082.09 × 85,278.69
  4. Step 4: Simplify right side
    113,622.21x = 13,395,754,431.27
  5. Step 5: Solve for x
    x = 13,395,754,431.27/113,622.21
  6. Step 6: Final answer
    x = 117,897.32

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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.