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Finding the Fourth Proportional to 172,363.72, 237,782.10 and 100,746.76

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Solution

The fourth proportional to 172,363.72, 237,782.10 and 100,746.76 is: 138,983.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,363.72 : 237,782.10 = 100,746.76 : x
  2. Step 2: Convert to fraction form
    172,363.72/237,782.10 = 100,746.76/x
  3. Step 3: Cross multiply
    172,363.72x = 237,782.10 × 100,746.76
  4. Step 4: Simplify right side
    172,363.72x = 23,955,776,161.00
  5. Step 5: Solve for x
    x = 23,955,776,161.00/172,363.72
  6. Step 6: Final answer
    x = 138,983.87

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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.