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Finding the Fourth Proportional to 114,708, 158,228.40 and 72,192.72

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Solution

The fourth proportional to 114,708, 158,228.40 and 72,192.72 is: 99,582.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,708 : 158,228.40 = 72,192.72 : x
  2. Step 2: Convert to fraction form
    114,708/158,228.40 = 72,192.72/x
  3. Step 3: Cross multiply
    114,708x = 158,228.40 × 72,192.72
  4. Step 4: Simplify right side
    114,708x = 11,422,938,577.25
  5. Step 5: Solve for x
    x = 11,422,938,577.25/114,708
  6. Step 6: Final answer
    x = 99,582.75

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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.