Home / 128,087.46-191,999.93-53,251.02

Finding the Fourth Proportional to 128,087.46, 191,999.93 and 53,251.02

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Solution

The fourth proportional to 128,087.46, 191,999.93 and 53,251.02 is: 79,821.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,087.46 : 191,999.93 = 53,251.02 : x
  2. Step 2: Convert to fraction form
    128,087.46/191,999.93 = 53,251.02/x
  3. Step 3: Cross multiply
    128,087.46x = 191,999.93 × 53,251.02
  4. Step 4: Simplify right side
    128,087.46x = 10,224,191,846.17
  5. Step 5: Solve for x
    x = 10,224,191,846.17/128,087.46
  6. Step 6: Final answer
    x = 79,821.96

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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.