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Finding the Fourth Proportional to 145,424.67, 218,130.66 and 45,582.59

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Solution

The fourth proportional to 145,424.67, 218,130.66 and 45,582.59 is: 68,371.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,424.67 : 218,130.66 = 45,582.59 : x
  2. Step 2: Convert to fraction form
    145,424.67/218,130.66 = 45,582.59/x
  3. Step 3: Cross multiply
    145,424.67x = 218,130.66 × 45,582.59
  4. Step 4: Simplify right side
    145,424.67x = 9,942,959,350.56
  5. Step 5: Solve for x
    x = 9,942,959,350.56/145,424.67
  6. Step 6: Final answer
    x = 68,371.89

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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.