Home / 154,867.90-213,704.76-86,875.42

Finding the Fourth Proportional to 154,867.90, 213,704.76 and 86,875.42

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Solution

The fourth proportional to 154,867.90, 213,704.76 and 86,875.42 is: 119,880.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,867.90 : 213,704.76 = 86,875.42 : x
  2. Step 2: Convert to fraction form
    154,867.90/213,704.76 = 86,875.42/x
  3. Step 3: Cross multiply
    154,867.90x = 213,704.76 × 86,875.42
  4. Step 4: Simplify right side
    154,867.90x = 18,565,690,781.00
  5. Step 5: Solve for x
    x = 18,565,690,781.00/154,867.90
  6. Step 6: Final answer
    x = 119,880.82

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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.