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Finding the Fourth Proportional to 108,798.39, 150,157.80 and 66,381.53

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Solution

The fourth proportional to 108,798.39, 150,157.80 and 66,381.53 is: 91,616.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,798.39 : 150,157.80 = 66,381.53 : x
  2. Step 2: Convert to fraction form
    108,798.39/150,157.80 = 66,381.53/x
  3. Step 3: Cross multiply
    108,798.39x = 150,157.80 × 66,381.53
  4. Step 4: Simplify right side
    108,798.39x = 9,967,703,754.65
  5. Step 5: Solve for x
    x = 9,967,703,754.65/108,798.39
  6. Step 6: Final answer
    x = 91,616.28

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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.