Home / 142,787.02-197,047.74-79,125.88

Finding the Fourth Proportional to 142,787.02, 197,047.74 and 79,125.88

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Solution

The fourth proportional to 142,787.02, 197,047.74 and 79,125.88 is: 109,194.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,787.02 : 197,047.74 = 79,125.88 : x
  2. Step 2: Convert to fraction form
    142,787.02/197,047.74 = 79,125.88/x
  3. Step 3: Cross multiply
    142,787.02x = 197,047.74 × 79,125.88
  4. Step 4: Simplify right side
    142,787.02x = 15,591,575,829.51
  5. Step 5: Solve for x
    x = 15,591,575,829.51/142,787.02
  6. Step 6: Final answer
    x = 109,194.63

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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.