Home / 128,152.81-192,238.98-34,657.75

Finding the Fourth Proportional to 128,152.81, 192,238.98 and 34,657.75

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Solution

The fourth proportional to 128,152.81, 192,238.98 and 34,657.75 is: 51,989.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,152.81 : 192,238.98 = 34,657.75 : x
  2. Step 2: Convert to fraction form
    128,152.81/192,238.98 = 34,657.75/x
  3. Step 3: Cross multiply
    128,152.81x = 192,238.98 × 34,657.75
  4. Step 4: Simplify right side
    128,152.81x = 6,662,570,509.10
  5. Step 5: Solve for x
    x = 6,662,570,509.10/128,152.81
  6. Step 6: Final answer
    x = 51,989.27

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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.