Home / 142,257.42-196,312.68-78,599.52

Finding the Fourth Proportional to 142,257.42, 196,312.68 and 78,599.52

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Solution

The fourth proportional to 142,257.42, 196,312.68 and 78,599.52 is: 108,465.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,257.42 : 196,312.68 = 78,599.52 : x
  2. Step 2: Convert to fraction form
    142,257.42/196,312.68 = 78,599.52/x
  3. Step 3: Cross multiply
    142,257.42x = 196,312.68 × 78,599.52
  4. Step 4: Simplify right side
    142,257.42x = 15,430,082,417.91
  5. Step 5: Solve for x
    x = 15,430,082,417.91/142,257.42
  6. Step 6: Final answer
    x = 108,465.92

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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.