Home / 105,256.32-145,251.88-57,508.48

Finding the Fourth Proportional to 105,256.32, 145,251.88 and 57,508.48

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Solution

The fourth proportional to 105,256.32, 145,251.88 and 57,508.48 is: 79,360.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,256.32 : 145,251.88 = 57,508.48 : x
  2. Step 2: Convert to fraction form
    105,256.32/145,251.88 = 57,508.48/x
  3. Step 3: Cross multiply
    105,256.32x = 145,251.88 × 57,508.48
  4. Step 4: Simplify right side
    105,256.32x = 8,353,214,835.94
  5. Step 5: Solve for x
    x = 8,353,214,835.94/105,256.32
  6. Step 6: Final answer
    x = 79,360.70

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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.