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Finding the Fourth Proportional to 181,951.70, 272,927.55 and 139,912.70

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Solution

The fourth proportional to 181,951.70, 272,927.55 and 139,912.70 is: 209,869.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,951.70 : 272,927.55 = 139,912.70 : x
  2. Step 2: Convert to fraction form
    181,951.70/272,927.55 = 139,912.70/x
  3. Step 3: Cross multiply
    181,951.70x = 272,927.55 × 139,912.70
  4. Step 4: Simplify right side
    181,951.70x = 38,186,030,424.89
  5. Step 5: Solve for x
    x = 38,186,030,424.89/181,951.70
  6. Step 6: Final answer
    x = 209,869.05

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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.