Home / 113,700.20-170,744.70-74,431.40

Finding the Fourth Proportional to 113,700.20, 170,744.70 and 74,431.40

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Solution

The fourth proportional to 113,700.20, 170,744.70 and 74,431.40 is: 111,774.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,700.20 : 170,744.70 = 74,431.40 : x
  2. Step 2: Convert to fraction form
    113,700.20/170,744.70 = 74,431.40/x
  3. Step 3: Cross multiply
    113,700.20x = 170,744.70 × 74,431.40
  4. Step 4: Simplify right side
    113,700.20x = 12,708,767,063.58
  5. Step 5: Solve for x
    x = 12,708,767,063.58/113,700.20
  6. Step 6: Final answer
    x = 111,774.36

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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.