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Finding the Fourth Proportional to 98,809.60, 148,113.60 and 48,812.80

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Solution

The fourth proportional to 98,809.60, 148,113.60 and 48,812.80 is: 73,169.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,809.60 : 148,113.60 = 48,812.80 : x
  2. Step 2: Convert to fraction form
    98,809.60/148,113.60 = 48,812.80/x
  3. Step 3: Cross multiply
    98,809.60x = 148,113.60 × 48,812.80
  4. Step 4: Simplify right side
    98,809.60x = 7,229,839,534.08
  5. Step 5: Solve for x
    x = 7,229,839,534.08/98,809.60
  6. Step 6: Final answer
    x = 73,169.40

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1.5x scale

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.