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Finding the Fourth Proportional to 145,342.71, 200,551.64 and 80,806.77

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Solution

The fourth proportional to 145,342.71, 200,551.64 and 80,806.77 is: 111,501.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,342.71 : 200,551.64 = 80,806.77 : x
  2. Step 2: Convert to fraction form
    145,342.71/200,551.64 = 80,806.77/x
  3. Step 3: Cross multiply
    145,342.71x = 200,551.64 × 80,806.77
  4. Step 4: Simplify right side
    145,342.71x = 16,205,929,842.57
  5. Step 5: Solve for x
    x = 16,205,929,842.57/145,342.71
  6. Step 6: Final answer
    x = 111,501.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.