Home / 101,815,980.70-152,556,009.45-86,699,436.70

Finding the Fourth Proportional to 101,815,980.70, 152,556,009.45 and 86,699,436.70

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Solution

The fourth proportional to 101,815,980.70, 152,556,009.45 and 86,699,436.70 is: 129,906,130.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,815,980.70 : 152,556,009.45 = 86,699,436.70 : x
  2. Step 2: Convert to fraction form
    101,815,980.70/152,556,009.45 = 86,699,436.70/x
  3. Step 3: Cross multiply
    101,815,980.70x = 152,556,009.45 × 86,699,436.70
  4. Step 4: Simplify right side
    101,815,980.70x = 13,226,520,084,514,876
  5. Step 5: Solve for x
    x = 13,226,520,084,514,876/101,815,980.70
  6. Step 6: Final answer
    x = 129,906,130.59

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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.