Home / 154,007.30-231,010.95-87,421.70

Finding the Fourth Proportional to 154,007.30, 231,010.95 and 87,421.70

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Solution

The fourth proportional to 154,007.30, 231,010.95 and 87,421.70 is: 131,132.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,007.30 : 231,010.95 = 87,421.70 : x
  2. Step 2: Convert to fraction form
    154,007.30/231,010.95 = 87,421.70/x
  3. Step 3: Cross multiply
    154,007.30x = 231,010.95 × 87,421.70
  4. Step 4: Simplify right side
    154,007.30x = 20,195,369,967.62
  5. Step 5: Solve for x
    x = 20,195,369,967.62/154,007.30
  6. Step 6: Final answer
    x = 131,132.55

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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.