Home / 99,121.60-148,688.80-52,465.60

Finding the Fourth Proportional to 99,121.60, 148,688.80 and 52,465.60

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Solution

The fourth proportional to 99,121.60, 148,688.80 and 52,465.60 is: 78,701.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,121.60 : 148,688.80 = 52,465.60 : x
  2. Step 2: Convert to fraction form
    99,121.60/148,688.80 = 52,465.60/x
  3. Step 3: Cross multiply
    99,121.60x = 148,688.80 × 52,465.60
  4. Step 4: Simplify right side
    99,121.60x = 7,801,047,105.28
  5. Step 5: Solve for x
    x = 7,801,047,105.28/99,121.60
  6. Step 6: Final answer
    x = 78,701.79

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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.