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Finding the Fourth Proportional to 145,639.82, 218,544.64 and 61,394.82

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Solution

The fourth proportional to 145,639.82, 218,544.64 and 61,394.82 is: 92,128.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,639.82 : 218,544.64 = 61,394.82 : x
  2. Step 2: Convert to fraction form
    145,639.82/218,544.64 = 61,394.82/x
  3. Step 3: Cross multiply
    145,639.82x = 218,544.64 × 61,394.82
  4. Step 4: Simplify right side
    145,639.82x = 13,417,508,834.76
  5. Step 5: Solve for x
    x = 13,417,508,834.76/145,639.82
  6. Step 6: Final answer
    x = 92,128.02

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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.