Home / 90,888.11-136,354.27-30,920.57

Finding the Fourth Proportional to 90,888.11, 136,354.27 and 30,920.57

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Solution

The fourth proportional to 90,888.11, 136,354.27 and 30,920.57 is: 46,388.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,888.11 : 136,354.27 = 30,920.57 : x
  2. Step 2: Convert to fraction form
    90,888.11/136,354.27 = 30,920.57/x
  3. Step 3: Cross multiply
    90,888.11x = 136,354.27 × 30,920.57
  4. Step 4: Simplify right side
    90,888.11x = 4,216,151,750.33
  5. Step 5: Solve for x
    x = 4,216,151,750.33/90,888.11
  6. Step 6: Final answer
    x = 46,388.38

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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.