Home / 99,059.40-148,589.10-72,880.20

Finding the Fourth Proportional to 99,059.40, 148,589.10 and 72,880.20

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Solution

The fourth proportional to 99,059.40, 148,589.10 and 72,880.20 is: 109,320.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,059.40 : 148,589.10 = 72,880.20 : x
  2. Step 2: Convert to fraction form
    99,059.40/148,589.10 = 72,880.20/x
  3. Step 3: Cross multiply
    99,059.40x = 148,589.10 × 72,880.20
  4. Step 4: Simplify right side
    99,059.40x = 10,829,203,325.82
  5. Step 5: Solve for x
    x = 10,829,203,325.82/99,059.40
  6. Step 6: Final answer
    x = 109,320.30

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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.