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Finding the Fourth Proportional to 136,652.94, 188,585.73 and 79,287.93

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Solution

The fourth proportional to 136,652.94, 188,585.73 and 79,287.93 is: 109,420.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,652.94 : 188,585.73 = 79,287.93 : x
  2. Step 2: Convert to fraction form
    136,652.94/188,585.73 = 79,287.93/x
  3. Step 3: Cross multiply
    136,652.94x = 188,585.73 × 79,287.93
  4. Step 4: Simplify right side
    136,652.94x = 14,952,572,159.24
  5. Step 5: Solve for x
    x = 14,952,572,159.24/136,652.94
  6. Step 6: Final answer
    x = 109,420.05

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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.