Home / 139,088.78-191,940.70-75,426.24

Finding the Fourth Proportional to 139,088.78, 191,940.70 and 75,426.24

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Solution

The fourth proportional to 139,088.78, 191,940.70 and 75,426.24 is: 104,087.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,088.78 : 191,940.70 = 75,426.24 : x
  2. Step 2: Convert to fraction form
    139,088.78/191,940.70 = 75,426.24/x
  3. Step 3: Cross multiply
    139,088.78x = 191,940.70 × 75,426.24
  4. Step 4: Simplify right side
    139,088.78x = 14,477,365,303.97
  5. Step 5: Solve for x
    x = 14,477,365,303.97/139,088.78
  6. Step 6: Final answer
    x = 104,087.23

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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.