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Finding the Fourth Proportional to 112,934.40, 169,401.60 and 103,257.60

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Solution

The fourth proportional to 112,934.40, 169,401.60 and 103,257.60 is: 154,886.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,934.40 : 169,401.60 = 103,257.60 : x
  2. Step 2: Convert to fraction form
    112,934.40/169,401.60 = 103,257.60/x
  3. Step 3: Cross multiply
    112,934.40x = 169,401.60 × 103,257.60
  4. Step 4: Simplify right side
    112,934.40x = 17,492,002,652.16
  5. Step 5: Solve for x
    x = 17,492,002,652.16/112,934.40
  6. Step 6: Final answer
    x = 154,886.40

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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.