Home / 113,690.40-170,438.36-43,620

Finding the Fourth Proportional to 113,690.40, 170,438.36 and 43,620

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Solution

The fourth proportional to 113,690.40, 170,438.36 and 43,620 is: 65,392.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,690.40 : 170,438.36 = 43,620 : x
  2. Step 2: Convert to fraction form
    113,690.40/170,438.36 = 43,620/x
  3. Step 3: Cross multiply
    113,690.40x = 170,438.36 × 43,620
  4. Step 4: Simplify right side
    113,690.40x = 7,434,521,263.20
  5. Step 5: Solve for x
    x = 7,434,521,263.20/113,690.40
  6. Step 6: Final answer
    x = 65,392.69

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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.