Home / 145,031.04-217,339.20-82,572.48

Finding the Fourth Proportional to 145,031.04, 217,339.20 and 82,572.48

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Solution

The fourth proportional to 145,031.04, 217,339.20 and 82,572.48 is: 123,740.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,031.04 : 217,339.20 = 82,572.48 : x
  2. Step 2: Convert to fraction form
    145,031.04/217,339.20 = 82,572.48/x
  3. Step 3: Cross multiply
    145,031.04x = 217,339.20 × 82,572.48
  4. Step 4: Simplify right side
    145,031.04x = 17,946,236,745.22
  5. Step 5: Solve for x
    x = 17,946,236,745.22/145,031.04
  6. Step 6: Final answer
    x = 123,740.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.