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Finding the Fourth Proportional to 128,465.60, 192,583.20 and 114,468.80

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Solution

The fourth proportional to 128,465.60, 192,583.20 and 114,468.80 is: 171,600.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,465.60 : 192,583.20 = 114,468.80 : x
  2. Step 2: Convert to fraction form
    128,465.60/192,583.20 = 114,468.80/x
  3. Step 3: Cross multiply
    128,465.60x = 192,583.20 × 114,468.80
  4. Step 4: Simplify right side
    128,465.60x = 22,044,767,804.16
  5. Step 5: Solve for x
    x = 22,044,767,804.16/128,465.60
  6. Step 6: Final answer
    x = 171,600.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.