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Finding the Fourth Proportional to 111,354.16, 153,462.64 and 79,090.16

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Solution

The fourth proportional to 111,354.16, 153,462.64 and 79,090.16 is: 108,998.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,354.16 : 153,462.64 = 79,090.16 : x
  2. Step 2: Convert to fraction form
    111,354.16/153,462.64 = 79,090.16/x
  3. Step 3: Cross multiply
    111,354.16x = 153,462.64 × 79,090.16
  4. Step 4: Simplify right side
    111,354.16x = 12,137,384,751.62
  5. Step 5: Solve for x
    x = 12,137,384,751.62/111,354.16
  6. Step 6: Final answer
    x = 108,998.04

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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.