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Finding the Fourth Proportional to 103,083.39, 154,492.95 and 89,700.77

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Solution

The fourth proportional to 103,083.39, 154,492.95 and 89,700.77 is: 134,436.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,083.39 : 154,492.95 = 89,700.77 : x
  2. Step 2: Convert to fraction form
    103,083.39/154,492.95 = 89,700.77/x
  3. Step 3: Cross multiply
    103,083.39x = 154,492.95 × 89,700.77
  4. Step 4: Simplify right side
    103,083.39x = 13,858,135,802.11
  5. Step 5: Solve for x
    x = 13,858,135,802.11/103,083.39
  6. Step 6: Final answer
    x = 134,436.17

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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.