Home / 99,214.20-148,710.60-42,989.40

Finding the Fourth Proportional to 99,214.20, 148,710.60 and 42,989.40

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Solution

The fourth proportional to 99,214.20, 148,710.60 and 42,989.40 is: 64,436.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,214.20 : 148,710.60 = 42,989.40 : x
  2. Step 2: Convert to fraction form
    99,214.20/148,710.60 = 42,989.40/x
  3. Step 3: Cross multiply
    99,214.20x = 148,710.60 × 42,989.40
  4. Step 4: Simplify right side
    99,214.20x = 6,392,979,467.64
  5. Step 5: Solve for x
    x = 6,392,979,467.64/99,214.20
  6. Step 6: Final answer
    x = 64,436.13

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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.