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Finding the Fourth Proportional to 172,886, 238,582.72 and 97,437.20

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Solution

The fourth proportional to 172,886, 238,582.72 and 97,437.20 is: 134,463.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,886 : 238,582.72 = 97,437.20 : x
  2. Step 2: Convert to fraction form
    172,886/238,582.72 = 97,437.20/x
  3. Step 3: Cross multiply
    172,886x = 238,582.72 × 97,437.20
  4. Step 4: Simplify right side
    172,886x = 23,246,832,205.18
  5. Step 5: Solve for x
    x = 23,246,832,205.18/172,886
  6. Step 6: Final answer
    x = 134,463.36

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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.