Home / 118,220.77-163,168.94-72,288.26

Finding the Fourth Proportional to 118,220.77, 163,168.94 and 72,288.26

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Solution

The fourth proportional to 118,220.77, 163,168.94 and 72,288.26 is: 99,772.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,220.77 : 163,168.94 = 72,288.26 : x
  2. Step 2: Convert to fraction form
    118,220.77/163,168.94 = 72,288.26/x
  3. Step 3: Cross multiply
    118,220.77x = 163,168.94 × 72,288.26
  4. Step 4: Simplify right side
    118,220.77x = 11,795,198,397.20
  5. Step 5: Solve for x
    x = 11,795,198,397.20/118,220.77
  6. Step 6: Final answer
    x = 99,772.64

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1.5x scale

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.