Home / 139,227.63-192,088.40-78,792.27

Finding the Fourth Proportional to 139,227.63, 192,088.40 and 78,792.27

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Solution

The fourth proportional to 139,227.63, 192,088.40 and 78,792.27 is: 108,707.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,227.63 : 192,088.40 = 78,792.27 : x
  2. Step 2: Convert to fraction form
    139,227.63/192,088.40 = 78,792.27/x
  3. Step 3: Cross multiply
    139,227.63x = 192,088.40 × 78,792.27
  4. Step 4: Simplify right side
    139,227.63x = 15,135,080,682.71
  5. Step 5: Solve for x
    x = 15,135,080,682.71/139,227.63
  6. Step 6: Final answer
    x = 108,707.45

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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.