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Finding the Fourth Proportional to 124,655.76, 187,051.68 and 72,167.76

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Solution

The fourth proportional to 124,655.76, 187,051.68 and 72,167.76 is: 108,291.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,655.76 : 187,051.68 = 72,167.76 : x
  2. Step 2: Convert to fraction form
    124,655.76/187,051.68 = 72,167.76/x
  3. Step 3: Cross multiply
    124,655.76x = 187,051.68 × 72,167.76
  4. Step 4: Simplify right side
    124,655.76x = 13,499,100,749.84
  5. Step 5: Solve for x
    x = 13,499,100,749.84/124,655.76
  6. Step 6: Final answer
    x = 108,291.03

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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.