Home / 118,223.64-163,172.91-72,291.14

Finding the Fourth Proportional to 118,223.64, 163,172.91 and 72,291.14

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Solution

The fourth proportional to 118,223.64, 163,172.91 and 72,291.14 is: 99,776.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,223.64 : 163,172.91 = 72,291.14 : x
  2. Step 2: Convert to fraction form
    118,223.64/163,172.91 = 72,291.14/x
  3. Step 3: Cross multiply
    118,223.64x = 163,172.91 × 72,291.14
  4. Step 4: Simplify right side
    118,223.64x = 11,795,954,865.15
  5. Step 5: Solve for x
    x = 11,795,954,865.15/118,223.64
  6. Step 6: Final answer
    x = 99,776.62

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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.