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Finding the Fourth Proportional to 124,797.60, 172,220.88 and 68,208.80

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Solution

The fourth proportional to 124,797.60, 172,220.88 and 68,208.80 is: 94,128.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,797.60 : 172,220.88 = 68,208.80 : x
  2. Step 2: Convert to fraction form
    124,797.60/172,220.88 = 68,208.80/x
  3. Step 3: Cross multiply
    124,797.60x = 172,220.88 × 68,208.80
  4. Step 4: Simplify right side
    124,797.60x = 11,746,979,559.74
  5. Step 5: Solve for x
    x = 11,746,979,559.74/124,797.60
  6. Step 6: Final answer
    x = 94,128.25

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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.