Home / 138,240,918.40-207,361,377.60-102,409,110.40

Finding the Fourth Proportional to 138,240,918.40, 207,361,377.60 and 102,409,110.40

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Solution

The fourth proportional to 138,240,918.40, 207,361,377.60 and 102,409,110.40 is: 153,613,665.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,240,918.40 : 207,361,377.60 = 102,409,110.40 : x
  2. Step 2: Convert to fraction form
    138,240,918.40/207,361,377.60 = 102,409,110.40/x
  3. Step 3: Cross multiply
    138,240,918.40x = 207,361,377.60 × 102,409,110.40
  4. Step 4: Simplify right side
    138,240,918.40x = 21,235,694,211,334,488
  5. Step 5: Solve for x
    x = 21,235,694,211,334,488/138,240,918.40
  6. Step 6: Final answer
    x = 153,613,665.60

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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.