Home / 128,316.21-192,465.09-39,560.46

Finding the Fourth Proportional to 128,316.21, 192,465.09 and 39,560.46

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Solution

The fourth proportional to 128,316.21, 192,465.09 and 39,560.46 is: 59,337.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,316.21 : 192,465.09 = 39,560.46 : x
  2. Step 2: Convert to fraction form
    128,316.21/192,465.09 = 39,560.46/x
  3. Step 3: Cross multiply
    128,316.21x = 192,465.09 × 39,560.46
  4. Step 4: Simplify right side
    128,316.21x = 7,614,007,494.34
  5. Step 5: Solve for x
    x = 7,614,007,494.34/128,316.21
  6. Step 6: Final answer
    x = 59,337.85

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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.