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Finding the Fourth Proportional to 113,886.70, 170,830.05 and 112,137.10

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Solution

The fourth proportional to 113,886.70, 170,830.05 and 112,137.10 is: 168,205.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,886.70 : 170,830.05 = 112,137.10 : x
  2. Step 2: Convert to fraction form
    113,886.70/170,830.05 = 112,137.10/x
  3. Step 3: Cross multiply
    113,886.70x = 170,830.05 × 112,137.10
  4. Step 4: Simplify right side
    113,886.70x = 19,156,386,399.86
  5. Step 5: Solve for x
    x = 19,156,386,399.86/113,886.70
  6. Step 6: Final answer
    x = 168,205.65

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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.