Home / 142,915.40-197,223.78-79,259.08

Finding the Fourth Proportional to 142,915.40, 197,223.78 and 79,259.08

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Solution

The fourth proportional to 142,915.40, 197,223.78 and 79,259.08 is: 109,377.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,915.40 : 197,223.78 = 79,259.08 : x
  2. Step 2: Convert to fraction form
    142,915.40/197,223.78 = 79,259.08/x
  3. Step 3: Cross multiply
    142,915.40x = 197,223.78 × 79,259.08
  4. Step 4: Simplify right side
    142,915.40x = 15,631,775,356.92
  5. Step 5: Solve for x
    x = 15,631,775,356.92/142,915.40
  6. Step 6: Final answer
    x = 109,377.82

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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.