Home / 108,614.16-149,887.56-66,172.68

Finding the Fourth Proportional to 108,614.16, 149,887.56 and 66,172.68

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Solution

The fourth proportional to 108,614.16, 149,887.56 and 66,172.68 is: 91,318.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,614.16 : 149,887.56 = 66,172.68 : x
  2. Step 2: Convert to fraction form
    108,614.16/149,887.56 = 66,172.68/x
  3. Step 3: Cross multiply
    108,614.16x = 149,887.56 × 66,172.68
  4. Step 4: Simplify right side
    108,614.16x = 9,918,461,543.86
  5. Step 5: Solve for x
    x = 9,918,461,543.86/108,614.16
  6. Step 6: Final answer
    x = 91,318.31

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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.