Home / 138,287,268.18-190,836,038.34-76,407,165.90

Finding the Fourth Proportional to 138,287,268.18, 190,836,038.34 and 76,407,165.90

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Solution

The fourth proportional to 138,287,268.18, 190,836,038.34 and 76,407,165.90 is: 105,441,672.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,287,268.18 : 190,836,038.34 = 76,407,165.90 : x
  2. Step 2: Convert to fraction form
    138,287,268.18/190,836,038.34 = 76,407,165.90/x
  3. Step 3: Cross multiply
    138,287,268.18x = 190,836,038.34 × 76,407,165.90
  4. Step 4: Simplify right side
    138,287,268.18x = 14,581,240,841,143,142
  5. Step 5: Solve for x
    x = 14,581,240,841,143,142/138,287,268.18
  6. Step 6: Final answer
    x = 105,441,672.49

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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.