Home / 128,038.06-192,088.24-42,648.70

Finding the Fourth Proportional to 128,038.06, 192,088.24 and 42,648.70

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Solution

The fourth proportional to 128,038.06, 192,088.24 and 42,648.70 is: 63,983.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,038.06 : 192,088.24 = 42,648.70 : x
  2. Step 2: Convert to fraction form
    128,038.06/192,088.24 = 42,648.70/x
  3. Step 3: Cross multiply
    128,038.06x = 192,088.24 × 42,648.70
  4. Step 4: Simplify right side
    128,038.06x = 8,192,313,721.29
  5. Step 5: Solve for x
    x = 8,192,313,721.29/128,038.06
  6. Step 6: Final answer
    x = 63,983.43

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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.