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Finding the Fourth Proportional to 172,465.90, 238,031.40 and 100,832.20

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Solution

The fourth proportional to 172,465.90, 238,031.40 and 100,832.20 is: 139,165.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,465.90 : 238,031.40 = 100,832.20 : x
  2. Step 2: Convert to fraction form
    172,465.90/238,031.40 = 100,832.20/x
  3. Step 3: Cross multiply
    172,465.90x = 238,031.40 × 100,832.20
  4. Step 4: Simplify right side
    172,465.90x = 24,001,229,731.08
  5. Step 5: Solve for x
    x = 24,001,229,731.08/172,465.90
  6. Step 6: Final answer
    x = 139,165.07

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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.