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Finding the Fourth Proportional to 108,700.68, 150,008.49 and 65,674.19

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Solution

The fourth proportional to 108,700.68, 150,008.49 and 65,674.19 is: 90,631.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,700.68 : 150,008.49 = 65,674.19 : x
  2. Step 2: Convert to fraction form
    108,700.68/150,008.49 = 65,674.19/x
  3. Step 3: Cross multiply
    108,700.68x = 150,008.49 × 65,674.19
  4. Step 4: Simplify right side
    108,700.68x = 9,851,686,448.89
  5. Step 5: Solve for x
    x = 9,851,686,448.89/108,700.68
  6. Step 6: Final answer
    x = 90,631.32

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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.