Home / 210,212.12-315,322.50-69,971.96

Finding the Fourth Proportional to 210,212.12, 315,322.50 and 69,971.96

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Solution

The fourth proportional to 210,212.12, 315,322.50 and 69,971.96 is: 104,959.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,212.12 : 315,322.50 = 69,971.96 : x
  2. Step 2: Convert to fraction form
    210,212.12/315,322.50 = 69,971.96/x
  3. Step 3: Cross multiply
    210,212.12x = 315,322.50 × 69,971.96
  4. Step 4: Simplify right side
    210,212.12x = 22,063,733,357.10
  5. Step 5: Solve for x
    x = 22,063,733,357.10/210,212.12
  6. Step 6: Final answer
    x = 104,959.38

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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.