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Finding the Fourth Proportional to 113,840.40, 170,645.40 and 67,069.20

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Solution

The fourth proportional to 113,840.40, 170,645.40 and 67,069.20 is: 100,535.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,840.40 : 170,645.40 = 67,069.20 : x
  2. Step 2: Convert to fraction form
    113,840.40/170,645.40 = 67,069.20/x
  3. Step 3: Cross multiply
    113,840.40x = 170,645.40 × 67,069.20
  4. Step 4: Simplify right side
    113,840.40x = 11,445,050,461.68
  5. Step 5: Solve for x
    x = 11,445,050,461.68/113,840.40
  6. Step 6: Final answer
    x = 100,535.93

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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.