Home / 137,549.09-189,813.38-77,123.19

Finding the Fourth Proportional to 137,549.09, 189,813.38 and 77,123.19

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Solution

The fourth proportional to 137,549.09, 189,813.38 and 77,123.19 is: 106,427.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,549.09 : 189,813.38 = 77,123.19 : x
  2. Step 2: Convert to fraction form
    137,549.09/189,813.38 = 77,123.19/x
  3. Step 3: Cross multiply
    137,549.09x = 189,813.38 × 77,123.19
  4. Step 4: Simplify right side
    137,549.09x = 14,639,012,628.77
  5. Step 5: Solve for x
    x = 14,639,012,628.77/137,549.09
  6. Step 6: Final answer
    x = 106,427.55

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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.