Home / 99,208.20-148,812.30-67,715.40

Finding the Fourth Proportional to 99,208.20, 148,812.30 and 67,715.40

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Solution

The fourth proportional to 99,208.20, 148,812.30 and 67,715.40 is: 101,573.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,208.20 : 148,812.30 = 67,715.40 : x
  2. Step 2: Convert to fraction form
    99,208.20/148,812.30 = 67,715.40/x
  3. Step 3: Cross multiply
    99,208.20x = 148,812.30 × 67,715.40
  4. Step 4: Simplify right side
    99,208.20x = 10,076,884,419.42
  5. Step 5: Solve for x
    x = 10,076,884,419.42/99,208.20
  6. Step 6: Final answer
    x = 101,573.10

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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.