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Finding the Fourth Proportional to 101,819.68, 152,526.54 and 79,528.72

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Solution

The fourth proportional to 101,819.68, 152,526.54 and 79,528.72 is: 119,134.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,819.68 : 152,526.54 = 79,528.72 : x
  2. Step 2: Convert to fraction form
    101,819.68/152,526.54 = 79,528.72/x
  3. Step 3: Cross multiply
    101,819.68x = 152,526.54 × 79,528.72
  4. Step 4: Simplify right side
    101,819.68x = 12,130,240,492.23
  5. Step 5: Solve for x
    x = 12,130,240,492.23/101,819.68
  6. Step 6: Final answer
    x = 119,134.54

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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.