Home / 210,116.60-315,218.10-69,975.80

Finding the Fourth Proportional to 210,116.60, 315,218.10 and 69,975.80

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Solution

The fourth proportional to 210,116.60, 315,218.10 and 69,975.80 is: 104,978.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,116.60 : 315,218.10 = 69,975.80 : x
  2. Step 2: Convert to fraction form
    210,116.60/315,218.10 = 69,975.80/x
  3. Step 3: Cross multiply
    210,116.60x = 315,218.10 × 69,975.80
  4. Step 4: Simplify right side
    210,116.60x = 22,057,638,721.98
  5. Step 5: Solve for x
    x = 22,057,638,721.98/210,116.60
  6. Step 6: Final answer
    x = 104,978.09

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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.