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Finding the Fourth Proportional to 105,087.60, 157,631.40 and 98,866.80

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Solution

The fourth proportional to 105,087.60, 157,631.40 and 98,866.80 is: 148,300.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,087.60 : 157,631.40 = 98,866.80 : x
  2. Step 2: Convert to fraction form
    105,087.60/157,631.40 = 98,866.80/x
  3. Step 3: Cross multiply
    105,087.60x = 157,631.40 × 98,866.80
  4. Step 4: Simplify right side
    105,087.60x = 15,584,512,097.52
  5. Step 5: Solve for x
    x = 15,584,512,097.52/105,087.60
  6. Step 6: Final answer
    x = 148,300.20

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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.