Home / 155,815,521.82-215,031,750.15-86,199,703.18

Finding the Fourth Proportional to 155,815,521.82, 215,031,750.15 and 86,199,703.18

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Solution

The fourth proportional to 155,815,521.82, 215,031,750.15 and 86,199,703.18 is: 118,959,092.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,815,521.82 : 215,031,750.15 = 86,199,703.18 : x
  2. Step 2: Convert to fraction form
    155,815,521.82/215,031,750.15 = 86,199,703.18/x
  3. Step 3: Cross multiply
    155,815,521.82x = 215,031,750.15 × 86,199,703.18
  4. Step 4: Simplify right side
    155,815,521.82x = 18,535,673,037,205,924
  5. Step 5: Solve for x
    x = 18,535,673,037,205,924/155,815,521.82
  6. Step 6: Final answer
    x = 118,959,092.27

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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.