Home / 113,920.30-170,880.45-66,486.70

Finding the Fourth Proportional to 113,920.30, 170,880.45 and 66,486.70

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Solution

The fourth proportional to 113,920.30, 170,880.45 and 66,486.70 is: 99,730.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,920.30 : 170,880.45 = 66,486.70 : x
  2. Step 2: Convert to fraction form
    113,920.30/170,880.45 = 66,486.70/x
  3. Step 3: Cross multiply
    113,920.30x = 170,880.45 × 66,486.70
  4. Step 4: Simplify right side
    113,920.30x = 11,361,277,215.02
  5. Step 5: Solve for x
    x = 11,361,277,215.02/113,920.30
  6. Step 6: Final answer
    x = 99,730.05

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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.