Home / 142,923.20-197,246.14-79,281.50

Finding the Fourth Proportional to 142,923.20, 197,246.14 and 79,281.50

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Solution

The fourth proportional to 142,923.20, 197,246.14 and 79,281.50 is: 109,415.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,923.20 : 197,246.14 = 79,281.50 : x
  2. Step 2: Convert to fraction form
    142,923.20/197,246.14 = 79,281.50/x
  3. Step 3: Cross multiply
    142,923.20x = 197,246.14 × 79,281.50
  4. Step 4: Simplify right side
    142,923.20x = 15,637,969,848.41
  5. Step 5: Solve for x
    x = 15,637,969,848.41/142,923.20
  6. Step 6: Final answer
    x = 109,415.20

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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.