Home / 137,605,584-189,852,948.45-78,057,073.20

Finding the Fourth Proportional to 137,605,584, 189,852,948.45 and 78,057,073.20

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Solution

The fourth proportional to 137,605,584, 189,852,948.45 and 78,057,073.20 is: 107,694,506.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,605,584 : 189,852,948.45 = 78,057,073.20 : x
  2. Step 2: Convert to fraction form
    137,605,584/189,852,948.45 = 78,057,073.20/x
  3. Step 3: Cross multiply
    137,605,584x = 189,852,948.45 × 78,057,073.20
  4. Step 4: Simplify right side
    137,605,584x = 14,819,365,494,397,476
  5. Step 5: Solve for x
    x = 14,819,365,494,397,476/137,605,584
  6. Step 6: Final answer
    x = 107,694,506.75

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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.