Home / 154,420.30-231,670.40-90,432.48

Finding the Fourth Proportional to 154,420.30, 231,670.40 and 90,432.48

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Solution

The fourth proportional to 154,420.30, 231,670.40 and 90,432.48 is: 135,672.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,420.30 : 231,670.40 = 90,432.48 : x
  2. Step 2: Convert to fraction form
    154,420.30/231,670.40 = 90,432.48/x
  3. Step 3: Cross multiply
    154,420.30x = 231,670.40 × 90,432.48
  4. Step 4: Simplify right side
    154,420.30x = 20,950,528,814.59
  5. Step 5: Solve for x
    x = 20,950,528,814.59/154,420.30
  6. Step 6: Final answer
    x = 135,672.12

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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.