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Finding the Fourth Proportional to 144,615.70, 216,955.95 and 55,861.30

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Solution

The fourth proportional to 144,615.70, 216,955.95 and 55,861.30 is: 83,804.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,615.70 : 216,955.95 = 55,861.30 : x
  2. Step 2: Convert to fraction form
    144,615.70/216,955.95 = 55,861.30/x
  3. Step 3: Cross multiply
    144,615.70x = 216,955.95 × 55,861.30
  4. Step 4: Simplify right side
    144,615.70x = 12,119,441,409.74
  5. Step 5: Solve for x
    x = 12,119,441,409.74/144,615.70
  6. Step 6: Final answer
    x = 83,804.47

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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.