Home / 140,128.47-193,381.39-76,470.37

Finding the Fourth Proportional to 140,128.47, 193,381.39 and 76,470.37

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Solution

The fourth proportional to 140,128.47, 193,381.39 and 76,470.37 is: 105,531.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,128.47 : 193,381.39 = 76,470.37 : x
  2. Step 2: Convert to fraction form
    140,128.47/193,381.39 = 76,470.37/x
  3. Step 3: Cross multiply
    140,128.47x = 193,381.39 × 76,470.37
  4. Step 4: Simplify right side
    140,128.47x = 14,787,946,444.41
  5. Step 5: Solve for x
    x = 14,787,946,444.41/140,128.47
  6. Step 6: Final answer
    x = 105,531.35

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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.