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Finding the Fourth Proportional to 98,694.40, 148,041.60 and 69,145.60

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Solution

The fourth proportional to 98,694.40, 148,041.60 and 69,145.60 is: 103,718.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,694.40 : 148,041.60 = 69,145.60 : x
  2. Step 2: Convert to fraction form
    98,694.40/148,041.60 = 69,145.60/x
  3. Step 3: Cross multiply
    98,694.40x = 148,041.60 × 69,145.60
  4. Step 4: Simplify right side
    98,694.40x = 10,236,425,256.96
  5. Step 5: Solve for x
    x = 10,236,425,256.96/98,694.40
  6. Step 6: Final answer
    x = 103,718.40

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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.