Home / 139,192.17-192,035.01-78,762.18

Finding the Fourth Proportional to 139,192.17, 192,035.01 and 78,762.18

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Solution

The fourth proportional to 139,192.17, 192,035.01 and 78,762.18 is: 108,663.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,192.17 : 192,035.01 = 78,762.18 : x
  2. Step 2: Convert to fraction form
    139,192.17/192,035.01 = 78,762.18/x
  3. Step 3: Cross multiply
    139,192.17x = 192,035.01 × 78,762.18
  4. Step 4: Simplify right side
    139,192.17x = 15,125,096,023.92
  5. Step 5: Solve for x
    x = 15,125,096,023.92/139,192.17
  6. Step 6: Final answer
    x = 108,663.41

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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.