Home / 210,985.80-316,259.99-131,918.46

Finding the Fourth Proportional to 210,985.80, 316,259.99 and 131,918.46

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Solution

The fourth proportional to 210,985.80, 316,259.99 and 131,918.46 is: 197,740.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,985.80 : 316,259.99 = 131,918.46 : x
  2. Step 2: Convert to fraction form
    210,985.80/316,259.99 = 131,918.46/x
  3. Step 3: Cross multiply
    210,985.80x = 316,259.99 × 131,918.46
  4. Step 4: Simplify right side
    210,985.80x = 41,720,530,840.42
  5. Step 5: Solve for x
    x = 41,720,530,840.42/210,985.80
  6. Step 6: Final answer
    x = 197,740.94

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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.