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Finding the Fourth Proportional to 102,064.64, 153,079.68 and 28,192.64

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Solution

The fourth proportional to 102,064.64, 153,079.68 and 28,192.64 is: 42,284.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,064.64 : 153,079.68 = 28,192.64 : x
  2. Step 2: Convert to fraction form
    102,064.64/153,079.68 = 28,192.64/x
  3. Step 3: Cross multiply
    102,064.64x = 153,079.68 × 28,192.64
  4. Step 4: Simplify right side
    102,064.64x = 4,315,720,309.56
  5. Step 5: Solve for x
    x = 4,315,720,309.56/102,064.64
  6. Step 6: Final answer
    x = 42,284.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.