Home / 154,931.34-213,406.92-109,531.20

Finding the Fourth Proportional to 154,931.34, 213,406.92 and 109,531.20

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Solution

The fourth proportional to 154,931.34, 213,406.92 and 109,531.20 is: 150,871.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,931.34 : 213,406.92 = 109,531.20 : x
  2. Step 2: Convert to fraction form
    154,931.34/213,406.92 = 109,531.20/x
  3. Step 3: Cross multiply
    154,931.34x = 213,406.92 × 109,531.20
  4. Step 4: Simplify right side
    154,931.34x = 23,374,716,035.90
  5. Step 5: Solve for x
    x = 23,374,716,035.90/154,931.34
  6. Step 6: Final answer
    x = 150,871.45

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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.