Home / 210,128.33-289,967.50-129,563.35

Finding the Fourth Proportional to 210,128.33, 289,967.50 and 129,563.35

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Solution

The fourth proportional to 210,128.33, 289,967.50 and 129,563.35 is: 178,791.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,128.33 : 289,967.50 = 129,563.35 : x
  2. Step 2: Convert to fraction form
    210,128.33/289,967.50 = 129,563.35/x
  3. Step 3: Cross multiply
    210,128.33x = 289,967.50 × 129,563.35
  4. Step 4: Simplify right side
    210,128.33x = 37,569,159,399.37
  5. Step 5: Solve for x
    x = 37,569,159,399.37/210,128.33
  6. Step 6: Final answer
    x = 178,791.50

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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.