Home / 139,799.04-192,923.84-76,137.28

Finding the Fourth Proportional to 139,799.04, 192,923.84 and 76,137.28

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Solution

The fourth proportional to 139,799.04, 192,923.84 and 76,137.28 is: 105,070.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,799.04 : 192,923.84 = 76,137.28 : x
  2. Step 2: Convert to fraction form
    139,799.04/192,923.84 = 76,137.28/x
  3. Step 3: Cross multiply
    139,799.04x = 192,923.84 × 76,137.28
  4. Step 4: Simplify right side
    139,799.04x = 14,688,696,424.76
  5. Step 5: Solve for x
    x = 14,688,696,424.76/139,799.04
  6. Step 6: Final answer
    x = 105,070.08

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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.