Home / 137,549.59-189,814.07-77,123.69

Finding the Fourth Proportional to 137,549.59, 189,814.07 and 77,123.69

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Solution

The fourth proportional to 137,549.59, 189,814.07 and 77,123.69 is: 106,428.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,549.59 : 189,814.07 = 77,123.69 : x
  2. Step 2: Convert to fraction form
    137,549.59/189,814.07 = 77,123.69/x
  3. Step 3: Cross multiply
    137,549.59x = 189,814.07 × 77,123.69
  4. Step 4: Simplify right side
    137,549.59x = 14,639,161,106.70
  5. Step 5: Solve for x
    x = 14,639,161,106.70/137,549.59
  6. Step 6: Final answer
    x = 106,428.25

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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.