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Finding the Fourth Proportional to 147,323.70, 220,985.55 and 42,142.68

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Solution

The fourth proportional to 147,323.70, 220,985.55 and 42,142.68 is: 63,214.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,323.70 : 220,985.55 = 42,142.68 : x
  2. Step 2: Convert to fraction form
    147,323.70/220,985.55 = 42,142.68/x
  3. Step 3: Cross multiply
    147,323.70x = 220,985.55 × 42,142.68
  4. Step 4: Simplify right side
    147,323.70x = 9,312,923,318.27
  5. Step 5: Solve for x
    x = 9,312,923,318.27/147,323.70
  6. Step 6: Final answer
    x = 63,214.02

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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.