Home / 108,056.20-161,987.10-70,634.20

Finding the Fourth Proportional to 108,056.20, 161,987.10 and 70,634.20

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Solution

The fourth proportional to 108,056.20, 161,987.10 and 70,634.20 is: 105,887.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,056.20 : 161,987.10 = 70,634.20 : x
  2. Step 2: Convert to fraction form
    108,056.20/161,987.10 = 70,634.20/x
  3. Step 3: Cross multiply
    108,056.20x = 161,987.10 × 70,634.20
  4. Step 4: Simplify right side
    108,056.20x = 11,441,829,218.82
  5. Step 5: Solve for x
    x = 11,441,829,218.82/108,056.20
  6. Step 6: Final answer
    x = 105,887.76

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1.5x scale

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.