Home / 154,941.65-213,819.88-86,031.24

Finding the Fourth Proportional to 154,941.65, 213,819.88 and 86,031.24

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Solution

The fourth proportional to 154,941.65, 213,819.88 and 86,031.24 is: 118,723.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,941.65 : 213,819.88 = 86,031.24 : x
  2. Step 2: Convert to fraction form
    154,941.65/213,819.88 = 86,031.24/x
  3. Step 3: Cross multiply
    154,941.65x = 213,819.88 × 86,031.24
  4. Step 4: Simplify right side
    154,941.65x = 18,395,189,259.11
  5. Step 5: Solve for x
    x = 18,395,189,259.11/154,941.65
  6. Step 6: Final answer
    x = 118,723.34

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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.