Home / 154,011.36-212,536.42-86,031.20

Finding the Fourth Proportional to 154,011.36, 212,536.42 and 86,031.20

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Solution

The fourth proportional to 154,011.36, 212,536.42 and 86,031.20 is: 118,723.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,011.36 : 212,536.42 = 86,031.20 : x
  2. Step 2: Convert to fraction form
    154,011.36/212,536.42 = 86,031.20/x
  3. Step 3: Cross multiply
    154,011.36x = 212,536.42 × 86,031.20
  4. Step 4: Simplify right side
    154,011.36x = 18,284,762,826.15
  5. Step 5: Solve for x
    x = 18,284,762,826.15/154,011.36
  6. Step 6: Final answer
    x = 118,723.47

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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.