Home / 211,985.40-317,637.90-112,015.20

Finding the Fourth Proportional to 211,985.40, 317,637.90 and 112,015.20

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Solution

The fourth proportional to 211,985.40, 317,637.90 and 112,015.20 is: 167,843.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,985.40 : 317,637.90 = 112,015.20 : x
  2. Step 2: Convert to fraction form
    211,985.40/317,637.90 = 112,015.20/x
  3. Step 3: Cross multiply
    211,985.40x = 317,637.90 × 112,015.20
  4. Step 4: Simplify right side
    211,985.40x = 35,580,272,896.08
  5. Step 5: Solve for x
    x = 35,580,272,896.08/211,985.40
  6. Step 6: Final answer
    x = 167,843.03

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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.