Home / 139,089.18-191,943.09-75,426.69

Finding the Fourth Proportional to 139,089.18, 191,943.09 and 75,426.69

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Solution

The fourth proportional to 139,089.18, 191,943.09 and 75,426.69 is: 104,088.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,089.18 : 191,943.09 = 75,426.69 : x
  2. Step 2: Convert to fraction form
    139,089.18/191,943.09 = 75,426.69/x
  3. Step 3: Cross multiply
    139,089.18x = 191,943.09 × 75,426.69
  4. Step 4: Simplify right side
    139,089.18x = 14,477,631,947.07
  5. Step 5: Solve for x
    x = 14,477,631,947.07/139,089.18
  6. Step 6: Final answer
    x = 104,088.84

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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.