Home / 128,162.30-192,261.87-39,423.29

Finding the Fourth Proportional to 128,162.30, 192,261.87 and 39,423.29

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Solution

The fourth proportional to 128,162.30, 192,261.87 and 39,423.29 is: 59,140.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,162.30 : 192,261.87 = 39,423.29 : x
  2. Step 2: Convert to fraction form
    128,162.30/192,261.87 = 39,423.29/x
  3. Step 3: Cross multiply
    128,162.30x = 192,261.87 × 39,423.29
  4. Step 4: Simplify right side
    128,162.30x = 7,579,594,495.64
  5. Step 5: Solve for x
    x = 7,579,594,495.64/128,162.30
  6. Step 6: Final answer
    x = 59,140.60

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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.