Home / 100,356,401.90-138,233,793.16-70,937,157.36

Finding the Fourth Proportional to 100,356,401.90, 138,233,793.16 and 70,937,157.36

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Solution

The fourth proportional to 100,356,401.90, 138,233,793.16 and 70,937,157.36 is: 97,710,879.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,356,401.90 : 138,233,793.16 = 70,937,157.36 : x
  2. Step 2: Convert to fraction form
    100,356,401.90/138,233,793.16 = 70,937,157.36/x
  3. Step 3: Cross multiply
    100,356,401.90x = 138,233,793.16 × 70,937,157.36
  4. Step 4: Simplify right side
    100,356,401.90x = 9,805,912,337,860,612
  5. Step 5: Solve for x
    x = 9,805,912,337,860,612/100,356,401.90
  6. Step 6: Final answer
    x = 97,710,879.95

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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.