Home / 154,579.86-213,271.79-86,587.65

Finding the Fourth Proportional to 154,579.86, 213,271.79 and 86,587.65

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Solution

The fourth proportional to 154,579.86, 213,271.79 and 86,587.65 is: 119,463.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,579.86 : 213,271.79 = 86,587.65 : x
  2. Step 2: Convert to fraction form
    154,579.86/213,271.79 = 86,587.65/x
  3. Step 3: Cross multiply
    154,579.86x = 213,271.79 × 86,587.65
  4. Step 4: Simplify right side
    154,579.86x = 18,466,702,674.46
  5. Step 5: Solve for x
    x = 18,466,702,674.46/154,579.86
  6. Step 6: Final answer
    x = 119,463.83

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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.