Home / 154,427.76-213,130.40-86,470.64

Finding the Fourth Proportional to 154,427.76, 213,130.40 and 86,470.64

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Solution

The fourth proportional to 154,427.76, 213,130.40 and 86,470.64 is: 119,340.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,427.76 : 213,130.40 = 86,470.64 : x
  2. Step 2: Convert to fraction form
    154,427.76/213,130.40 = 86,470.64/x
  3. Step 3: Cross multiply
    154,427.76x = 213,130.40 × 86,470.64
  4. Step 4: Simplify right side
    154,427.76x = 18,429,522,091.46
  5. Step 5: Solve for x
    x = 18,429,522,091.46/154,427.76
  6. Step 6: Final answer
    x = 119,340.73

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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.