Home / 105,258.68-145,256.76-57,512.37

Finding the Fourth Proportional to 105,258.68, 145,256.76 and 57,512.37

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Solution

The fourth proportional to 105,258.68, 145,256.76 and 57,512.37 is: 79,366.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,258.68 : 145,256.76 = 57,512.37 : x
  2. Step 2: Convert to fraction form
    105,258.68/145,256.76 = 57,512.37/x
  3. Step 3: Cross multiply
    105,258.68x = 145,256.76 × 57,512.37
  4. Step 4: Simplify right side
    105,258.68x = 8,354,060,238.56
  5. Step 5: Solve for x
    x = 8,354,060,238.56/105,258.68
  6. Step 6: Final answer
    x = 79,366.95

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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.