Home / 99,931.12-149,852.76-53,172.88

Finding the Fourth Proportional to 99,931.12, 149,852.76 and 53,172.88

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Solution

The fourth proportional to 99,931.12, 149,852.76 and 53,172.88 is: 79,735.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,931.12 : 149,852.76 = 53,172.88 : x
  2. Step 2: Convert to fraction form
    99,931.12/149,852.76 = 53,172.88/x
  3. Step 3: Cross multiply
    99,931.12x = 149,852.76 × 53,172.88
  4. Step 4: Simplify right side
    99,931.12x = 7,968,102,825.15
  5. Step 5: Solve for x
    x = 7,968,102,825.15/99,931.12
  6. Step 6: Final answer
    x = 79,735.95

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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.