Home / 139,428.77-192,411.33-75,766.58

Finding the Fourth Proportional to 139,428.77, 192,411.33 and 75,766.58

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Solution

The fourth proportional to 139,428.77, 192,411.33 and 75,766.58 is: 104,557.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,428.77 : 192,411.33 = 75,766.58 : x
  2. Step 2: Convert to fraction form
    139,428.77/192,411.33 = 75,766.58/x
  3. Step 3: Cross multiply
    139,428.77x = 192,411.33 × 75,766.58
  4. Step 4: Simplify right side
    139,428.77x = 14,578,348,427.35
  5. Step 5: Solve for x
    x = 14,578,348,427.35/139,428.77
  6. Step 6: Final answer
    x = 104,557.68

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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.