Home / 105,256.08-145,251.69-57,508.40

Finding the Fourth Proportional to 105,256.08, 145,251.69 and 57,508.40

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Solution

The fourth proportional to 105,256.08, 145,251.69 and 57,508.40 is: 79,360.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,256.08 : 145,251.69 = 57,508.40 : x
  2. Step 2: Convert to fraction form
    105,256.08/145,251.69 = 57,508.40/x
  3. Step 3: Cross multiply
    105,256.08x = 145,251.69 × 57,508.40
  4. Step 4: Simplify right side
    105,256.08x = 8,353,192,289.20
  5. Step 5: Solve for x
    x = 8,353,192,289.20/105,256.08
  6. Step 6: Final answer
    x = 79,360.66

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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.