Home / 156,315,770.88-215,813,622.08-100,658,020.48

Finding the Fourth Proportional to 156,315,770.88, 215,813,622.08 and 100,658,020.48

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Solution

The fourth proportional to 156,315,770.88, 215,813,622.08 and 100,658,020.48 is: 138,971,083.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,315,770.88 : 215,813,622.08 = 100,658,020.48 : x
  2. Step 2: Convert to fraction form
    156,315,770.88/215,813,622.08 = 100,658,020.48/x
  3. Step 3: Cross multiply
    156,315,770.88x = 215,813,622.08 × 100,658,020.48
  4. Step 4: Simplify right side
    156,315,770.88x = 21,723,371,991,191,624
  5. Step 5: Solve for x
    x = 21,723,371,991,191,624/156,315,770.88
  6. Step 6: Final answer
    x = 138,971,083.14

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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.