Home / 105,615.60-145,747.28-57,867.92

Finding the Fourth Proportional to 105,615.60, 145,747.28 and 57,867.92

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Solution

The fourth proportional to 105,615.60, 145,747.28 and 57,867.92 is: 79,856.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,615.60 : 145,747.28 = 57,867.92 : x
  2. Step 2: Convert to fraction form
    105,615.60/145,747.28 = 57,867.92/x
  3. Step 3: Cross multiply
    105,615.60x = 145,747.28 × 57,867.92
  4. Step 4: Simplify right side
    105,615.60x = 8,434,091,939.26
  5. Step 5: Solve for x
    x = 8,434,091,939.26/105,615.60
  6. Step 6: Final answer
    x = 79,856.50

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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.