Home / 122,306.32-168,711.12-76,912.40

Finding the Fourth Proportional to 122,306.32, 168,711.12 and 76,912.40

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Solution

The fourth proportional to 122,306.32, 168,711.12 and 76,912.40 is: 106,094.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,306.32 : 168,711.12 = 76,912.40 : x
  2. Step 2: Convert to fraction form
    122,306.32/168,711.12 = 76,912.40/x
  3. Step 3: Cross multiply
    122,306.32x = 168,711.12 × 76,912.40
  4. Step 4: Simplify right side
    122,306.32x = 12,975,977,145.89
  5. Step 5: Solve for x
    x = 12,975,977,145.89/122,306.32
  6. Step 6: Final answer
    x = 106,094.09

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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.