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Finding the Fourth Proportional to 98,731.80, 148,097.70 and 79,048.80

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Solution

The fourth proportional to 98,731.80, 148,097.70 and 79,048.80 is: 118,573.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,731.80 : 148,097.70 = 79,048.80 : x
  2. Step 2: Convert to fraction form
    98,731.80/148,097.70 = 79,048.80/x
  3. Step 3: Cross multiply
    98,731.80x = 148,097.70 × 79,048.80
  4. Step 4: Simplify right side
    98,731.80x = 11,706,945,467.76
  5. Step 5: Solve for x
    x = 11,706,945,467.76/98,731.80
  6. Step 6: Final answer
    x = 118,573.20

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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.