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Finding the Fourth Proportional to 181,441.80, 272,162.70 and 139,969.80

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Solution

The fourth proportional to 181,441.80, 272,162.70 and 139,969.80 is: 209,954.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,441.80 : 272,162.70 = 139,969.80 : x
  2. Step 2: Convert to fraction form
    181,441.80/272,162.70 = 139,969.80/x
  3. Step 3: Cross multiply
    181,441.80x = 272,162.70 × 139,969.80
  4. Step 4: Simplify right side
    181,441.80x = 38,094,558,686.46
  5. Step 5: Solve for x
    x = 38,094,558,686.46/181,441.80
  6. Step 6: Final answer
    x = 209,954.70

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1.5x scale

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.