Home / 105,178.87-145,146.83-57,432.26

Finding the Fourth Proportional to 105,178.87, 145,146.83 and 57,432.26

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Solution

The fourth proportional to 105,178.87, 145,146.83 and 57,432.26 is: 79,256.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,178.87 : 145,146.83 = 57,432.26 : x
  2. Step 2: Convert to fraction form
    105,178.87/145,146.83 = 57,432.26/x
  3. Step 3: Cross multiply
    105,178.87x = 145,146.83 × 57,432.26
  4. Step 4: Simplify right side
    105,178.87x = 8,336,110,478.74
  5. Step 5: Solve for x
    x = 8,336,110,478.74/105,178.87
  6. Step 6: Final answer
    x = 79,256.51

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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.