Home / 138,287,674.68-190,836,599.31-76,407,572.40

Finding the Fourth Proportional to 138,287,674.68, 190,836,599.31 and 76,407,572.40

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Solution

The fourth proportional to 138,287,674.68, 190,836,599.31 and 76,407,572.40 is: 105,442,233.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,287,674.68 : 190,836,599.31 = 76,407,572.40 : x
  2. Step 2: Convert to fraction form
    138,287,674.68/190,836,599.31 = 76,407,572.40/x
  3. Step 3: Cross multiply
    138,287,674.68x = 190,836,599.31 × 76,407,572.40
  4. Step 4: Simplify right side
    138,287,674.68x = 14,581,361,278,348,616
  5. Step 5: Solve for x
    x = 14,581,361,278,348,616/138,287,674.68
  6. Step 6: Final answer
    x = 105,442,233.46

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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.