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Finding the Fourth Proportional to 88,190.88, 121,656.76 and 55,868.48

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Solution

The fourth proportional to 88,190.88, 121,656.76 and 55,868.48 is: 77,068.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,190.88 : 121,656.76 = 55,868.48 : x
  2. Step 2: Convert to fraction form
    88,190.88/121,656.76 = 55,868.48/x
  3. Step 3: Cross multiply
    88,190.88x = 121,656.76 × 55,868.48
  4. Step 4: Simplify right side
    88,190.88x = 6,796,778,262.92
  5. Step 5: Solve for x
    x = 6,796,778,262.92/88,190.88
  6. Step 6: Final answer
    x = 77,068.95

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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.