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Finding the Fourth Proportional to 172,315.58, 237,760.32 and 100,681.76

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Solution

The fourth proportional to 172,315.58, 237,760.32 and 100,681.76 is: 138,920.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,315.58 : 237,760.32 = 100,681.76 : x
  2. Step 2: Convert to fraction form
    172,315.58/237,760.32 = 100,681.76/x
  3. Step 3: Cross multiply
    172,315.58x = 237,760.32 × 100,681.76
  4. Step 4: Simplify right side
    172,315.58x = 23,938,127,475.76
  5. Step 5: Solve for x
    x = 23,938,127,475.76/172,315.58
  6. Step 6: Final answer
    x = 138,920.27

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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.