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Finding the Fourth Proportional to 99,202.60, 148,803.90 and 89,871.40

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Solution

The fourth proportional to 99,202.60, 148,803.90 and 89,871.40 is: 134,807.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,202.60 : 148,803.90 = 89,871.40 : x
  2. Step 2: Convert to fraction form
    99,202.60/148,803.90 = 89,871.40/x
  3. Step 3: Cross multiply
    99,202.60x = 148,803.90 × 89,871.40
  4. Step 4: Simplify right side
    99,202.60x = 13,373,214,818.46
  5. Step 5: Solve for x
    x = 13,373,214,818.46/99,202.60
  6. Step 6: Final answer
    x = 134,807.10

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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.