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Finding the Fourth Proportional to 112,911.52, 155,689.45 and 92,428.45

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Solution

The fourth proportional to 112,911.52, 155,689.45 and 92,428.45 is: 127,446.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,911.52 : 155,689.45 = 92,428.45 : x
  2. Step 2: Convert to fraction form
    112,911.52/155,689.45 = 92,428.45/x
  3. Step 3: Cross multiply
    112,911.52x = 155,689.45 × 92,428.45
  4. Step 4: Simplify right side
    112,911.52x = 14,390,134,544.85
  5. Step 5: Solve for x
    x = 14,390,134,544.85/112,911.52
  6. Step 6: Final answer
    x = 127,446.11

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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.