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Finding the Fourth Proportional to 108,056.70, 161,987.85 and 70,634.70

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Solution

The fourth proportional to 108,056.70, 161,987.85 and 70,634.70 is: 105,888.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,056.70 : 161,987.85 = 70,634.70 : x
  2. Step 2: Convert to fraction form
    108,056.70/161,987.85 = 70,634.70/x
  3. Step 3: Cross multiply
    108,056.70x = 161,987.85 × 70,634.70
  4. Step 4: Simplify right side
    108,056.70x = 11,441,963,188.40
  5. Step 5: Solve for x
    x = 11,441,963,188.40/108,056.70
  6. Step 6: Final answer
    x = 105,888.51

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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.