Home / 137,550.09-189,814.75-77,124.19

Finding the Fourth Proportional to 137,550.09, 189,814.75 and 77,124.19

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Solution

The fourth proportional to 137,550.09, 189,814.75 and 77,124.19 is: 106,428.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,550.09 : 189,814.75 = 77,124.19 : x
  2. Step 2: Convert to fraction form
    137,550.09/189,814.75 = 77,124.19/x
  3. Step 3: Cross multiply
    137,550.09x = 189,814.75 × 77,124.19
  4. Step 4: Simplify right side
    137,550.09x = 14,639,308,843.80
  5. Step 5: Solve for x
    x = 14,639,308,843.80/137,550.09
  6. Step 6: Final answer
    x = 106,428.93

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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.