Home / 99,811.20-149,498.10-53,009.40

Finding the Fourth Proportional to 99,811.20, 149,498.10 and 53,009.40

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Solution

The fourth proportional to 99,811.20, 149,498.10 and 53,009.40 is: 79,397.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,811.20 : 149,498.10 = 53,009.40 : x
  2. Step 2: Convert to fraction form
    99,811.20/149,498.10 = 53,009.40/x
  3. Step 3: Cross multiply
    99,811.20x = 149,498.10 × 53,009.40
  4. Step 4: Simplify right side
    99,811.20x = 7,924,804,582.14
  5. Step 5: Solve for x
    x = 7,924,804,582.14/99,811.20
  6. Step 6: Final answer
    x = 79,397.95

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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.