Home / 138,232,511.60-207,348,767.40-83,990,100.20

Finding the Fourth Proportional to 138,232,511.60, 207,348,767.40 and 83,990,100.20

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Solution

The fourth proportional to 138,232,511.60, 207,348,767.40 and 83,990,100.20 is: 125,985,150.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,232,511.60 : 207,348,767.40 = 83,990,100.20 : x
  2. Step 2: Convert to fraction form
    138,232,511.60/207,348,767.40 = 83,990,100.20/x
  3. Step 3: Cross multiply
    138,232,511.60x = 207,348,767.40 × 83,990,100.20
  4. Step 4: Simplify right side
    138,232,511.60x = 17,415,243,750,272,494
  5. Step 5: Solve for x
    x = 17,415,243,750,272,494/138,232,511.60
  6. Step 6: Final answer
    x = 125,985,150.30

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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.