Home / 153,849.40-212,313.74-85,872.76

Finding the Fourth Proportional to 153,849.40, 212,313.74 and 85,872.76

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Solution

The fourth proportional to 153,849.40, 212,313.74 and 85,872.76 is: 118,505.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,849.40 : 212,313.74 = 85,872.76 : x
  2. Step 2: Convert to fraction form
    153,849.40/212,313.74 = 85,872.76/x
  3. Step 3: Cross multiply
    153,849.40x = 212,313.74 × 85,872.76
  4. Step 4: Simplify right side
    153,849.40x = 18,231,966,839.72
  5. Step 5: Solve for x
    x = 18,231,966,839.72/153,849.40
  6. Step 6: Final answer
    x = 118,505.28

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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.