Home / 210,013.70-289,947.39-129,551.18

Finding the Fourth Proportional to 210,013.70, 289,947.39 and 129,551.18

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Solution

The fourth proportional to 210,013.70, 289,947.39 and 129,551.18 is: 178,859.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,013.70 : 289,947.39 = 129,551.18 : x
  2. Step 2: Convert to fraction form
    210,013.70/289,947.39 = 129,551.18/x
  3. Step 3: Cross multiply
    210,013.70x = 289,947.39 × 129,551.18
  4. Step 4: Simplify right side
    210,013.70x = 37,563,026,512.42
  5. Step 5: Solve for x
    x = 37,563,026,512.42/210,013.70
  6. Step 6: Final answer
    x = 178,859.89

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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.