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Finding the Fourth Proportional to 172,807.90, 238,393.41 and 101,143.54

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Solution

The fourth proportional to 172,807.90, 238,393.41 and 101,143.54 is: 139,530.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,807.90 : 238,393.41 = 101,143.54 : x
  2. Step 2: Convert to fraction form
    172,807.90/238,393.41 = 101,143.54/x
  3. Step 3: Cross multiply
    172,807.90x = 238,393.41 × 101,143.54
  4. Step 4: Simplify right side
    172,807.90x = 24,111,953,400.07
  5. Step 5: Solve for x
    x = 24,111,953,400.07/172,807.90
  6. Step 6: Final answer
    x = 139,530.39

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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.