Home / 90,638.12-125,095.59-75,506.83

Finding the Fourth Proportional to 90,638.12, 125,095.59 and 75,506.83

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Solution

The fourth proportional to 90,638.12, 125,095.59 and 75,506.83 is: 104,211.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,638.12 : 125,095.59 = 75,506.83 : x
  2. Step 2: Convert to fraction form
    90,638.12/125,095.59 = 75,506.83/x
  3. Step 3: Cross multiply
    90,638.12x = 125,095.59 × 75,506.83
  4. Step 4: Simplify right side
    90,638.12x = 9,445,571,135.14
  5. Step 5: Solve for x
    x = 9,445,571,135.14/90,638.12
  6. Step 6: Final answer
    x = 104,211.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.