Home / 154,470.16-213,158.50-86,475.66

Finding the Fourth Proportional to 154,470.16, 213,158.50 and 86,475.66

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Solution

The fourth proportional to 154,470.16, 213,158.50 and 86,475.66 is: 119,330.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,470.16 : 213,158.50 = 86,475.66 : x
  2. Step 2: Convert to fraction form
    154,470.16/213,158.50 = 86,475.66/x
  3. Step 3: Cross multiply
    154,470.16x = 213,158.50 × 86,475.66
  4. Step 4: Simplify right side
    154,470.16x = 18,433,021,972.11
  5. Step 5: Solve for x
    x = 18,433,021,972.11/154,470.16
  6. Step 6: Final answer
    x = 119,330.63

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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.