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Finding the Fourth Proportional to 103,362.32, 142,640.88 and 60,371.84

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Solution

The fourth proportional to 103,362.32, 142,640.88 and 60,371.84 is: 83,313.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,362.32 : 142,640.88 = 60,371.84 : x
  2. Step 2: Convert to fraction form
    103,362.32/142,640.88 = 60,371.84/x
  3. Step 3: Cross multiply
    103,362.32x = 142,640.88 × 60,371.84
  4. Step 4: Simplify right side
    103,362.32x = 8,611,492,384.82
  5. Step 5: Solve for x
    x = 8,611,492,384.82/103,362.32
  6. Step 6: Final answer
    x = 83,313.65

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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.