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Finding the Fourth Proportional to 111,353.16, 153,461.26 and 79,089.16

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Solution

The fourth proportional to 111,353.16, 153,461.26 and 79,089.16 is: 108,996.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,353.16 : 153,461.26 = 79,089.16 : x
  2. Step 2: Convert to fraction form
    111,353.16/153,461.26 = 79,089.16/x
  3. Step 3: Cross multiply
    111,353.16x = 153,461.26 × 79,089.16
  4. Step 4: Simplify right side
    111,353.16x = 12,137,122,145.94
  5. Step 5: Solve for x
    x = 12,137,122,145.94/111,353.16
  6. Step 6: Final answer
    x = 108,996.66

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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.