Home / 108,683.84-149,996.02-72,383.30

Finding the Fourth Proportional to 108,683.84, 149,996.02 and 72,383.30

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Solution

The fourth proportional to 108,683.84, 149,996.02 and 72,383.30 is: 99,897.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,683.84 : 149,996.02 = 72,383.30 : x
  2. Step 2: Convert to fraction form
    108,683.84/149,996.02 = 72,383.30/x
  3. Step 3: Cross multiply
    108,683.84x = 149,996.02 × 72,383.30
  4. Step 4: Simplify right side
    108,683.84x = 10,857,206,914.47
  5. Step 5: Solve for x
    x = 10,857,206,914.47/108,683.84
  6. Step 6: Final answer
    x = 99,897.16

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1.5x scale

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.