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Finding the Fourth Proportional to 187,178, 280,687.08 and 108,346.64

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Solution

The fourth proportional to 187,178, 280,687.08 and 108,346.64 is: 162,473.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,178 : 280,687.08 = 108,346.64 : x
  2. Step 2: Convert to fraction form
    187,178/280,687.08 = 108,346.64/x
  3. Step 3: Cross multiply
    187,178x = 280,687.08 × 108,346.64
  4. Step 4: Simplify right side
    187,178x = 30,411,502,009.41
  5. Step 5: Solve for x
    x = 30,411,502,009.41/187,178
  6. Step 6: Final answer
    x = 162,473.70

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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.