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Finding the Fourth Proportional to 124,656.51, 187,052.81 and 72,168.51

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Solution

The fourth proportional to 124,656.51, 187,052.81 and 72,168.51 is: 108,292.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,656.51 : 187,052.81 = 72,168.51 : x
  2. Step 2: Convert to fraction form
    124,656.51/187,052.81 = 72,168.51/x
  3. Step 3: Cross multiply
    124,656.51x = 187,052.81 × 72,168.51
  4. Step 4: Simplify right side
    124,656.51x = 13,499,322,228.17
  5. Step 5: Solve for x
    x = 13,499,322,228.17/124,656.51
  6. Step 6: Final answer
    x = 108,292.16

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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.