Home / 139,140.37-192,014.19-75,478.62

Finding the Fourth Proportional to 139,140.37, 192,014.19 and 75,478.62

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Solution

The fourth proportional to 139,140.37, 192,014.19 and 75,478.62 is: 104,160.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,140.37 : 192,014.19 = 75,478.62 : x
  2. Step 2: Convert to fraction form
    139,140.37/192,014.19 = 75,478.62/x
  3. Step 3: Cross multiply
    139,140.37x = 192,014.19 × 75,478.62
  4. Step 4: Simplify right side
    139,140.37x = 14,492,966,081.62
  5. Step 5: Solve for x
    x = 14,492,966,081.62/139,140.37
  6. Step 6: Final answer
    x = 104,160.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.