Home / 138,611,862.64-191,294,994.54-79,074,469.36

Finding the Fourth Proportional to 138,611,862.64, 191,294,994.54 and 79,074,469.36

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Solution

The fourth proportional to 138,611,862.64, 191,294,994.54 and 79,074,469.36 is: 109,128,828.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,611,862.64 : 191,294,994.54 = 79,074,469.36 : x
  2. Step 2: Convert to fraction form
    138,611,862.64/191,294,994.54 = 79,074,469.36/x
  3. Step 3: Cross multiply
    138,611,862.64x = 191,294,994.54 × 79,074,469.36
  4. Step 4: Simplify right side
    138,611,862.64x = 15,126,550,184,474,596
  5. Step 5: Solve for x
    x = 15,126,550,184,474,596/138,611,862.64
  6. Step 6: Final answer
    x = 109,128,828.49

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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.