Home / 228,743.06-315,665.46-128,141.06

Finding the Fourth Proportional to 228,743.06, 315,665.46 and 128,141.06

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Solution

The fourth proportional to 228,743.06, 315,665.46 and 128,141.06 is: 176,834.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,743.06 : 315,665.46 = 128,141.06 : x
  2. Step 2: Convert to fraction form
    228,743.06/315,665.46 = 128,141.06/x
  3. Step 3: Cross multiply
    228,743.06x = 315,665.46 × 128,141.06
  4. Step 4: Simplify right side
    228,743.06x = 40,449,706,649.79
  5. Step 5: Solve for x
    x = 40,449,706,649.79/228,743.06
  6. Step 6: Final answer
    x = 176,834.68

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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.