Home / 142,785.35-197,044.95-79,124.21

Finding the Fourth Proportional to 142,785.35, 197,044.95 and 79,124.21

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Solution

The fourth proportional to 142,785.35, 197,044.95 and 79,124.21 is: 109,192.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,785.35 : 197,044.95 = 79,124.21 : x
  2. Step 2: Convert to fraction form
    142,785.35/197,044.95 = 79,124.21/x
  3. Step 3: Cross multiply
    142,785.35x = 197,044.95 × 79,124.21
  4. Step 4: Simplify right side
    142,785.35x = 15,591,025,018.01
  5. Step 5: Solve for x
    x = 15,591,025,018.01/142,785.35
  6. Step 6: Final answer
    x = 109,192.05

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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.