Home / 153,031.80-211,177.08-85,053.54

Finding the Fourth Proportional to 153,031.80, 211,177.08 and 85,053.54

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Solution

The fourth proportional to 153,031.80, 211,177.08 and 85,053.54 is: 117,370.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,031.80 : 211,177.08 = 85,053.54 : x
  2. Step 2: Convert to fraction form
    153,031.80/211,177.08 = 85,053.54/x
  3. Step 3: Cross multiply
    153,031.80x = 211,177.08 × 85,053.54
  4. Step 4: Simplify right side
    153,031.80x = 17,961,358,220.86
  5. Step 5: Solve for x
    x = 17,961,358,220.86/153,031.80
  6. Step 6: Final answer
    x = 117,370.10

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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.