Home / 105,255.52-145,255.44-57,510.88

Finding the Fourth Proportional to 105,255.52, 145,255.44 and 57,510.88

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Solution

The fourth proportional to 105,255.52, 145,255.44 and 57,510.88 is: 79,366.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,255.52 : 145,255.44 = 57,510.88 : x
  2. Step 2: Convert to fraction form
    105,255.52/145,255.44 = 57,510.88/x
  3. Step 3: Cross multiply
    105,255.52x = 145,255.44 × 57,510.88
  4. Step 4: Simplify right side
    105,255.52x = 8,353,768,179.19
  5. Step 5: Solve for x
    x = 8,353,768,179.19/105,255.52
  6. Step 6: Final answer
    x = 79,366.56

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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.