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Finding the Fourth Proportional to 113,860.60, 170,790.90 and 112,305.40

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Solution

The fourth proportional to 113,860.60, 170,790.90 and 112,305.40 is: 168,458.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,860.60 : 170,790.90 = 112,305.40 : x
  2. Step 2: Convert to fraction form
    113,860.60/170,790.90 = 112,305.40/x
  3. Step 3: Cross multiply
    113,860.60x = 170,790.90 × 112,305.40
  4. Step 4: Simplify right side
    113,860.60x = 19,180,740,340.86
  5. Step 5: Solve for x
    x = 19,180,740,340.86/113,860.60
  6. Step 6: Final answer
    x = 168,458.10

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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.