Home / 210,078.72-289,958.40-120,706.56

Finding the Fourth Proportional to 210,078.72, 289,958.40 and 120,706.56

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Solution

The fourth proportional to 210,078.72, 289,958.40 and 120,706.56 is: 166,603.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,078.72 : 289,958.40 = 120,706.56 : x
  2. Step 2: Convert to fraction form
    210,078.72/289,958.40 = 120,706.56/x
  3. Step 3: Cross multiply
    210,078.72x = 289,958.40 × 120,706.56
  4. Step 4: Simplify right side
    210,078.72x = 34,999,881,007.10
  5. Step 5: Solve for x
    x = 34,999,881,007.10/210,078.72
  6. Step 6: Final answer
    x = 166,603.65

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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.