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Finding the Fourth Proportional to 106,805.60, 159,862.80 and 98,511.20

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Solution

The fourth proportional to 106,805.60, 159,862.80 and 98,511.20 is: 147,448.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,805.60 : 159,862.80 = 98,511.20 : x
  2. Step 2: Convert to fraction form
    106,805.60/159,862.80 = 98,511.20/x
  3. Step 3: Cross multiply
    106,805.60x = 159,862.80 × 98,511.20
  4. Step 4: Simplify right side
    106,805.60x = 15,748,276,263.36
  5. Step 5: Solve for x
    x = 15,748,276,263.36/106,805.60
  6. Step 6: Final answer
    x = 147,448.04

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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.