Home / 100,334.31-138,358.02-70,108.62

Finding the Fourth Proportional to 100,334.31, 138,358.02 and 70,108.62

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Solution

The fourth proportional to 100,334.31, 138,358.02 and 70,108.62 is: 96,677.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,334.31 : 138,358.02 = 70,108.62 : x
  2. Step 2: Convert to fraction form
    100,334.31/138,358.02 = 70,108.62/x
  3. Step 3: Cross multiply
    100,334.31x = 138,358.02 × 70,108.62
  4. Step 4: Simplify right side
    100,334.31x = 9,700,089,848.13
  5. Step 5: Solve for x
    x = 9,700,089,848.13/100,334.31
  6. Step 6: Final answer
    x = 96,677.70

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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.