Home / 154,438.26-213,113.03-86,439.66

Finding the Fourth Proportional to 154,438.26, 213,113.03 and 86,439.66

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Solution

The fourth proportional to 154,438.26, 213,113.03 and 86,439.66 is: 119,280.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,438.26 : 213,113.03 = 86,439.66 : x
  2. Step 2: Convert to fraction form
    154,438.26/213,113.03 = 86,439.66/x
  3. Step 3: Cross multiply
    154,438.26x = 213,113.03 × 86,439.66
  4. Step 4: Simplify right side
    154,438.26x = 18,421,417,422.57
  5. Step 5: Solve for x
    x = 18,421,417,422.57/154,438.26
  6. Step 6: Final answer
    x = 119,280.14

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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.