Home / 105,981.60-158,972.40-104,426.40

Finding the Fourth Proportional to 105,981.60, 158,972.40 and 104,426.40

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Solution

The fourth proportional to 105,981.60, 158,972.40 and 104,426.40 is: 156,639.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,981.60 : 158,972.40 = 104,426.40 : x
  2. Step 2: Convert to fraction form
    105,981.60/158,972.40 = 104,426.40/x
  3. Step 3: Cross multiply
    105,981.60x = 158,972.40 × 104,426.40
  4. Step 4: Simplify right side
    105,981.60x = 16,600,915,431.36
  5. Step 5: Solve for x
    x = 16,600,915,431.36/105,981.60
  6. Step 6: Final answer
    x = 156,639.60

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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.