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Finding the Fourth Proportional to 103,264.76, 154,900.96 and 28,390.77

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Solution

The fourth proportional to 103,264.76, 154,900.96 and 28,390.77 is: 42,587.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,264.76 : 154,900.96 = 28,390.77 : x
  2. Step 2: Convert to fraction form
    103,264.76/154,900.96 = 28,390.77/x
  3. Step 3: Cross multiply
    103,264.76x = 154,900.96 × 28,390.77
  4. Step 4: Simplify right side
    103,264.76x = 4,397,757,457.16
  5. Step 5: Solve for x
    x = 4,397,757,457.16/103,264.76
  6. Step 6: Final answer
    x = 42,587.20

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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.