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Finding the Fourth Proportional to 181,156.22, 249,990.81 and 100,581.67

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Solution

The fourth proportional to 181,156.22, 249,990.81 and 100,581.67 is: 138,800.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,156.22 : 249,990.81 = 100,581.67 : x
  2. Step 2: Convert to fraction form
    181,156.22/249,990.81 = 100,581.67/x
  3. Step 3: Cross multiply
    181,156.22x = 249,990.81 × 100,581.67
  4. Step 4: Simplify right side
    181,156.22x = 25,144,492,529.48
  5. Step 5: Solve for x
    x = 25,144,492,529.48/181,156.22
  6. Step 6: Final answer
    x = 138,800.05

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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.