Home / 136,897,138.70-188,927,320.28-77,337,777.76

Finding the Fourth Proportional to 136,897,138.70, 188,927,320.28 and 77,337,777.76

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Solution

The fourth proportional to 136,897,138.70, 188,927,320.28 and 77,337,777.76 is: 106,731,369.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,897,138.70 : 188,927,320.28 = 77,337,777.76 : x
  2. Step 2: Convert to fraction form
    136,897,138.70/188,927,320.28 = 77,337,777.76/x
  3. Step 3: Cross multiply
    136,897,138.70x = 188,927,320.28 × 77,337,777.76
  4. Step 4: Simplify right side
    136,897,138.70x = 14,611,219,108,328,006
  5. Step 5: Solve for x
    x = 14,611,219,108,328,006/136,897,138.70
  6. Step 6: Final answer
    x = 106,731,369.61

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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.