Home / 138,689,051-191,391,529.74-76,808,092.28

Finding the Fourth Proportional to 138,689,051, 191,391,529.74 and 76,808,092.28

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Solution

The fourth proportional to 138,689,051, 191,391,529.74 and 76,808,092.28 is: 105,995,521.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,689,051 : 191,391,529.74 = 76,808,092.28 : x
  2. Step 2: Convert to fraction form
    138,689,051/191,391,529.74 = 76,808,092.28/x
  3. Step 3: Cross multiply
    138,689,051x = 191,391,529.74 × 76,808,092.28
  4. Step 4: Simplify right side
    138,689,051x = 14,700,418,277,880,286
  5. Step 5: Solve for x
    x = 14,700,418,277,880,286/138,689,051
  6. Step 6: Final answer
    x = 105,995,521.43

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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.