Home / 138,109,429.32-190,562,561.21-79,360,744.22

Finding the Fourth Proportional to 138,109,429.32, 190,562,561.21 and 79,360,744.22

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Solution

The fourth proportional to 138,109,429.32, 190,562,561.21 and 79,360,744.22 is: 109,501,478.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,109,429.32 : 190,562,561.21 = 79,360,744.22 : x
  2. Step 2: Convert to fraction form
    138,109,429.32/190,562,561.21 = 79,360,744.22/x
  3. Step 3: Cross multiply
    138,109,429.32x = 190,562,561.21 × 79,360,744.22
  4. Step 4: Simplify right side
    138,109,429.32x = 15,123,186,676,745,288
  5. Step 5: Solve for x
    x = 15,123,186,676,745,288/138,109,429.32
  6. Step 6: Final answer
    x = 109,501,478.29

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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.