Home / 128,210.10-192,336.03-39,463.62

Finding the Fourth Proportional to 128,210.10, 192,336.03 and 39,463.62

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Solution

The fourth proportional to 128,210.10, 192,336.03 and 39,463.62 is: 59,201.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,210.10 : 192,336.03 = 39,463.62 : x
  2. Step 2: Convert to fraction form
    128,210.10/192,336.03 = 39,463.62/x
  3. Step 3: Cross multiply
    128,210.10x = 192,336.03 × 39,463.62
  4. Step 4: Simplify right side
    128,210.10x = 7,590,276,000.23
  5. Step 5: Solve for x
    x = 7,590,276,000.23/128,210.10
  6. Step 6: Final answer
    x = 59,201.86

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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.