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Finding the Fourth Proportional to 108,683.48, 149,947.35 and 65,646.89

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Solution

The fourth proportional to 108,683.48, 149,947.35 and 65,646.89 is: 90,571.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,683.48 : 149,947.35 = 65,646.89 : x
  2. Step 2: Convert to fraction form
    108,683.48/149,947.35 = 65,646.89/x
  3. Step 3: Cross multiply
    108,683.48x = 149,947.35 × 65,646.89
  4. Step 4: Simplify right side
    108,683.48x = 9,843,577,191.24
  5. Step 5: Solve for x
    x = 9,843,577,191.24/108,683.48
  6. Step 6: Final answer
    x = 90,571.05

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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.