Home / 181,538.90-272,113.95-81,682.10

Finding the Fourth Proportional to 181,538.90, 272,113.95 and 81,682.10

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Solution

The fourth proportional to 181,538.90, 272,113.95 and 81,682.10 is: 122,435.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,538.90 : 272,113.95 = 81,682.10 : x
  2. Step 2: Convert to fraction form
    181,538.90/272,113.95 = 81,682.10/x
  3. Step 3: Cross multiply
    181,538.90x = 272,113.95 × 81,682.10
  4. Step 4: Simplify right side
    181,538.90x = 22,226,838,875.30
  5. Step 5: Solve for x
    x = 22,226,838,875.30/181,538.90
  6. Step 6: Final answer
    x = 122,435.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.