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Finding the Fourth Proportional to 99,292.60, 137,055.66 and 63,578.80

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Solution

The fourth proportional to 99,292.60, 137,055.66 and 63,578.80 is: 87,759.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,292.60 : 137,055.66 = 63,578.80 : x
  2. Step 2: Convert to fraction form
    99,292.60/137,055.66 = 63,578.80/x
  3. Step 3: Cross multiply
    99,292.60x = 137,055.66 × 63,578.80
  4. Step 4: Simplify right side
    99,292.60x = 8,713,834,396.01
  5. Step 5: Solve for x
    x = 8,713,834,396.01/99,292.60
  6. Step 6: Final answer
    x = 87,759.15

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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.