Home / 210,423.21-315,427.04-83,987.27

Finding the Fourth Proportional to 210,423.21, 315,427.04 and 83,987.27

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Solution

The fourth proportional to 210,423.21, 315,427.04 and 83,987.27 is: 125,897.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,423.21 : 315,427.04 = 83,987.27 : x
  2. Step 2: Convert to fraction form
    210,423.21/315,427.04 = 83,987.27/x
  3. Step 3: Cross multiply
    210,423.21x = 315,427.04 × 83,987.27
  4. Step 4: Simplify right side
    210,423.21x = 26,491,855,973.78
  5. Step 5: Solve for x
    x = 26,491,855,973.78/210,423.21
  6. Step 6: Final answer
    x = 125,897.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.