Home / 142,984.46-197,342.16-79,342.76

Finding the Fourth Proportional to 142,984.46, 197,342.16 and 79,342.76

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Solution

The fourth proportional to 142,984.46, 197,342.16 and 79,342.76 is: 109,506.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,984.46 : 197,342.16 = 79,342.76 : x
  2. Step 2: Convert to fraction form
    142,984.46/197,342.16 = 79,342.76/x
  3. Step 3: Cross multiply
    142,984.46x = 197,342.16 × 79,342.76
  4. Step 4: Simplify right side
    142,984.46x = 15,657,671,638.76
  5. Step 5: Solve for x
    x = 15,657,671,638.76/142,984.46
  6. Step 6: Final answer
    x = 109,506.11

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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.