Home / 142,931.62-197,240.64-79,275.34

Finding the Fourth Proportional to 142,931.62, 197,240.64 and 79,275.34

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Solution

The fourth proportional to 142,931.62, 197,240.64 and 79,275.34 is: 109,397.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,931.62 : 197,240.64 = 79,275.34 : x
  2. Step 2: Convert to fraction form
    142,931.62/197,240.64 = 79,275.34/x
  3. Step 3: Cross multiply
    142,931.62x = 197,240.64 × 79,275.34
  4. Step 4: Simplify right side
    142,931.62x = 15,636,318,797.82
  5. Step 5: Solve for x
    x = 15,636,318,797.82/142,931.62
  6. Step 6: Final answer
    x = 109,397.20

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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.