Home / 119,031.42-164,270.63-78,675.20

Finding the Fourth Proportional to 119,031.42, 164,270.63 and 78,675.20

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Solution

The fourth proportional to 119,031.42, 164,270.63 and 78,675.20 is: 108,576.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,031.42 : 164,270.63 = 78,675.20 : x
  2. Step 2: Convert to fraction form
    119,031.42/164,270.63 = 78,675.20/x
  3. Step 3: Cross multiply
    119,031.42x = 164,270.63 × 78,675.20
  4. Step 4: Simplify right side
    119,031.42x = 12,924,024,660.73
  5. Step 5: Solve for x
    x = 12,924,024,660.73/119,031.42
  6. Step 6: Final answer
    x = 108,576.58

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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.