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Finding the Fourth Proportional to 98,133.80, 147,200.70 and 87,996.20

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Solution

The fourth proportional to 98,133.80, 147,200.70 and 87,996.20 is: 131,994.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,133.80 : 147,200.70 = 87,996.20 : x
  2. Step 2: Convert to fraction form
    98,133.80/147,200.70 = 87,996.20/x
  3. Step 3: Cross multiply
    98,133.80x = 147,200.70 × 87,996.20
  4. Step 4: Simplify right side
    98,133.80x = 12,953,102,237.34
  5. Step 5: Solve for x
    x = 12,953,102,237.34/98,133.80
  6. Step 6: Final answer
    x = 131,994.30

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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.