Home / 142,919.04-197,240.10-79,277.40

Finding the Fourth Proportional to 142,919.04, 197,240.10 and 79,277.40

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Solution

The fourth proportional to 142,919.04, 197,240.10 and 79,277.40 is: 109,409.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,919.04 : 197,240.10 = 79,277.40 : x
  2. Step 2: Convert to fraction form
    142,919.04/197,240.10 = 79,277.40/x
  3. Step 3: Cross multiply
    142,919.04x = 197,240.10 × 79,277.40
  4. Step 4: Simplify right side
    142,919.04x = 15,636,682,303.74
  5. Step 5: Solve for x
    x = 15,636,682,303.74/142,919.04
  6. Step 6: Final answer
    x = 109,409.37

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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.