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Finding the Fourth Proportional to 121,538.10, 182,307.15 and 104,916.90

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Solution

The fourth proportional to 121,538.10, 182,307.15 and 104,916.90 is: 157,375.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,538.10 : 182,307.15 = 104,916.90 : x
  2. Step 2: Convert to fraction form
    121,538.10/182,307.15 = 104,916.90/x
  3. Step 3: Cross multiply
    121,538.10x = 182,307.15 × 104,916.90
  4. Step 4: Simplify right side
    121,538.10x = 19,127,101,025.84
  5. Step 5: Solve for x
    x = 19,127,101,025.84/121,538.10
  6. Step 6: Final answer
    x = 157,375.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.