Home / 140,966,121.51-194,530,316.40-78,238,539.63

Finding the Fourth Proportional to 140,966,121.51, 194,530,316.40 and 78,238,539.63

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Solution

The fourth proportional to 140,966,121.51, 194,530,316.40 and 78,238,539.63 is: 107,967,557.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,966,121.51 : 194,530,316.40 = 78,238,539.63 : x
  2. Step 2: Convert to fraction form
    140,966,121.51/194,530,316.40 = 78,238,539.63/x
  3. Step 3: Cross multiply
    140,966,121.51x = 194,530,316.40 × 78,238,539.63
  4. Step 4: Simplify right side
    140,966,121.51x = 15,219,767,868,897,838
  5. Step 5: Solve for x
    x = 15,219,767,868,897,838/140,966,121.51
  6. Step 6: Final answer
    x = 107,967,557.78

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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.