Home / 153,938.56-212,433.12-85,956.64

Finding the Fourth Proportional to 153,938.56, 212,433.12 and 85,956.64

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Solution

The fourth proportional to 153,938.56, 212,433.12 and 85,956.64 is: 118,618.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,938.56 : 212,433.12 = 85,956.64 : x
  2. Step 2: Convert to fraction form
    153,938.56/212,433.12 = 85,956.64/x
  3. Step 3: Cross multiply
    153,938.56x = 212,433.12 × 85,956.64
  4. Step 4: Simplify right side
    153,938.56x = 18,260,037,219.92
  5. Step 5: Solve for x
    x = 18,260,037,219.92/153,938.56
  6. Step 6: Final answer
    x = 118,618.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.