Home / 142,835.32-197,114.73-78,310.63

Finding the Fourth Proportional to 142,835.32, 197,114.73 and 78,310.63

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Solution

The fourth proportional to 142,835.32, 197,114.73 and 78,310.63 is: 108,069.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,835.32 : 197,114.73 = 78,310.63 : x
  2. Step 2: Convert to fraction form
    142,835.32/197,114.73 = 78,310.63/x
  3. Step 3: Cross multiply
    142,835.32x = 197,114.73 × 78,310.63
  4. Step 4: Simplify right side
    142,835.32x = 15,436,178,688.58
  5. Step 5: Solve for x
    x = 15,436,178,688.58/142,835.32
  6. Step 6: Final answer
    x = 108,069.76

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1.5x scale

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.