Home / 154,490.13-213,199.62-87,422.13

Finding the Fourth Proportional to 154,490.13, 213,199.62 and 87,422.13

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Solution

The fourth proportional to 154,490.13, 213,199.62 and 87,422.13 is: 120,644.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,490.13 : 213,199.62 = 87,422.13 : x
  2. Step 2: Convert to fraction form
    154,490.13/213,199.62 = 87,422.13/x
  3. Step 3: Cross multiply
    154,490.13x = 213,199.62 × 87,422.13
  4. Step 4: Simplify right side
    154,490.13x = 18,638,364,895.59
  5. Step 5: Solve for x
    x = 18,638,364,895.59/154,490.13
  6. Step 6: Final answer
    x = 120,644.37

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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.