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Finding the Fourth Proportional to 105,081.60, 157,622.40 and 98,860.80

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Solution

The fourth proportional to 105,081.60, 157,622.40 and 98,860.80 is: 148,291.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,081.60 : 157,622.40 = 98,860.80 : x
  2. Step 2: Convert to fraction form
    105,081.60/157,622.40 = 98,860.80/x
  3. Step 3: Cross multiply
    105,081.60x = 157,622.40 × 98,860.80
  4. Step 4: Simplify right side
    105,081.60x = 15,582,676,561.92
  5. Step 5: Solve for x
    x = 15,582,676,561.92/105,081.60
  6. Step 6: Final answer
    x = 148,291.20

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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.