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Finding the Fourth Proportional to 103,806.54, 143,253.02 and 56,059.89

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Solution

The fourth proportional to 103,806.54, 143,253.02 and 56,059.89 is: 77,362.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,806.54 : 143,253.02 = 56,059.89 : x
  2. Step 2: Convert to fraction form
    103,806.54/143,253.02 = 56,059.89/x
  3. Step 3: Cross multiply
    103,806.54x = 143,253.02 × 56,059.89
  4. Step 4: Simplify right side
    103,806.54x = 8,030,748,543.37
  5. Step 5: Solve for x
    x = 8,030,748,543.37/103,806.54
  6. Step 6: Final answer
    x = 77,362.65

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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.