Home / 138,812,608.10-208,290,208.35-61,143,937.22

Finding the Fourth Proportional to 138,812,608.10, 208,290,208.35 and 61,143,937.22

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Solution

The fourth proportional to 138,812,608.10, 208,290,208.35 and 61,143,937.22 is: 91,747,310.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,812,608.10 : 208,290,208.35 = 61,143,937.22 : x
  2. Step 2: Convert to fraction form
    138,812,608.10/208,290,208.35 = 61,143,937.22/x
  3. Step 3: Cross multiply
    138,812,608.10x = 208,290,208.35 × 61,143,937.22
  4. Step 4: Simplify right side
    138,812,608.10x = 12,735,683,422,893,120
  5. Step 5: Solve for x
    x = 12,735,683,422,893,120/138,812,608.10
  6. Step 6: Final answer
    x = 91,747,310.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.