Home / 96,685.20-145,027.80-76,856.40

Finding the Fourth Proportional to 96,685.20, 145,027.80 and 76,856.40

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Solution

The fourth proportional to 96,685.20, 145,027.80 and 76,856.40 is: 115,284.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,685.20 : 145,027.80 = 76,856.40 : x
  2. Step 2: Convert to fraction form
    96,685.20/145,027.80 = 76,856.40/x
  3. Step 3: Cross multiply
    96,685.20x = 145,027.80 × 76,856.40
  4. Step 4: Simplify right side
    96,685.20x = 11,146,314,607.92
  5. Step 5: Solve for x
    x = 11,146,314,607.92/96,685.20
  6. Step 6: Final answer
    x = 115,284.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.