Home / 130,514.80-195,383.40-77,897.20

Finding the Fourth Proportional to 130,514.80, 195,383.40 and 77,897.20

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Solution

The fourth proportional to 130,514.80, 195,383.40 and 77,897.20 is: 116,613.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,514.80 : 195,383.40 = 77,897.20 : x
  2. Step 2: Convert to fraction form
    130,514.80/195,383.40 = 77,897.20/x
  3. Step 3: Cross multiply
    130,514.80x = 195,383.40 × 77,897.20
  4. Step 4: Simplify right side
    130,514.80x = 15,219,819,786.48
  5. Step 5: Solve for x
    x = 15,219,819,786.48/130,514.80
  6. Step 6: Final answer
    x = 116,613.75

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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.