Home / 210,890.13-291,033.09-115,396.80

Finding the Fourth Proportional to 210,890.13, 291,033.09 and 115,396.80

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Solution

The fourth proportional to 210,890.13, 291,033.09 and 115,396.80 is: 159,250.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,890.13 : 291,033.09 = 115,396.80 : x
  2. Step 2: Convert to fraction form
    210,890.13/291,033.09 = 115,396.80/x
  3. Step 3: Cross multiply
    210,890.13x = 291,033.09 × 115,396.80
  4. Step 4: Simplify right side
    210,890.13x = 33,584,287,280.11
  5. Step 5: Solve for x
    x = 33,584,287,280.11/210,890.13
  6. Step 6: Final answer
    x = 159,250.16

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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.