Home / 113,619.40-170,429.10-112,928.20

Finding the Fourth Proportional to 113,619.40, 170,429.10 and 112,928.20

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Solution

The fourth proportional to 113,619.40, 170,429.10 and 112,928.20 is: 169,392.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,619.40 : 170,429.10 = 112,928.20 : x
  2. Step 2: Convert to fraction form
    113,619.40/170,429.10 = 112,928.20/x
  3. Step 3: Cross multiply
    113,619.40x = 170,429.10 × 112,928.20
  4. Step 4: Simplify right side
    113,619.40x = 19,246,251,490.62
  5. Step 5: Solve for x
    x = 19,246,251,490.62/113,619.40
  6. Step 6: Final answer
    x = 169,392.30

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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.