Home / 189,139.96-261,013.12-104,258.80

Finding the Fourth Proportional to 189,139.96, 261,013.12 and 104,258.80

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Solution

The fourth proportional to 189,139.96, 261,013.12 and 104,258.80 is: 143,877.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,139.96 : 261,013.12 = 104,258.80 : x
  2. Step 2: Convert to fraction form
    189,139.96/261,013.12 = 104,258.80/x
  3. Step 3: Cross multiply
    189,139.96x = 261,013.12 × 104,258.80
  4. Step 4: Simplify right side
    189,139.96x = 27,212,914,675.46
  5. Step 5: Solve for x
    x = 27,212,914,675.46/189,139.96
  6. Step 6: Final answer
    x = 143,877.13

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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.