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Finding the Fourth Proportional to 105,453.60, 158,007.60 and 89,901.60

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Solution

The fourth proportional to 105,453.60, 158,007.60 and 89,901.60 is: 134,705.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,453.60 : 158,007.60 = 89,901.60 : x
  2. Step 2: Convert to fraction form
    105,453.60/158,007.60 = 89,901.60/x
  3. Step 3: Cross multiply
    105,453.60x = 158,007.60 × 89,901.60
  4. Step 4: Simplify right side
    105,453.60x = 14,205,136,052.16
  5. Step 5: Solve for x
    x = 14,205,136,052.16/105,453.60
  6. Step 6: Final answer
    x = 134,705.08

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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.