Home / 212,444.12-318,207.47-99,955.78

Finding the Fourth Proportional to 212,444.12, 318,207.47 and 99,955.78

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Solution

The fourth proportional to 212,444.12, 318,207.47 and 99,955.78 is: 149,717.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,444.12 : 318,207.47 = 99,955.78 : x
  2. Step 2: Convert to fraction form
    212,444.12/318,207.47 = 99,955.78/x
  3. Step 3: Cross multiply
    212,444.12x = 318,207.47 × 99,955.78
  4. Step 4: Simplify right side
    212,444.12x = 31,806,674,274.64
  5. Step 5: Solve for x
    x = 31,806,674,274.64/212,444.12
  6. Step 6: Final answer
    x = 149,717.84

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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.