Home / 212,332.13-318,547.40-72,090.75

Finding the Fourth Proportional to 212,332.13, 318,547.40 and 72,090.75

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Solution

The fourth proportional to 212,332.13, 318,547.40 and 72,090.75 is: 108,152.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,332.13 : 318,547.40 = 72,090.75 : x
  2. Step 2: Convert to fraction form
    212,332.13/318,547.40 = 72,090.75/x
  3. Step 3: Cross multiply
    212,332.13x = 318,547.40 × 72,090.75
  4. Step 4: Simplify right side
    212,332.13x = 22,964,320,976.55
  5. Step 5: Solve for x
    x = 22,964,320,976.55/212,332.13
  6. Step 6: Final answer
    x = 108,152.83

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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.