Home / 142,808.08-197,073.94-78,280.92

Finding the Fourth Proportional to 142,808.08, 197,073.94 and 78,280.92

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Solution

The fourth proportional to 142,808.08, 197,073.94 and 78,280.92 is: 108,027.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,808.08 : 197,073.94 = 78,280.92 : x
  2. Step 2: Convert to fraction form
    142,808.08/197,073.94 = 78,280.92/x
  3. Step 3: Cross multiply
    142,808.08x = 197,073.94 × 78,280.92
  4. Step 4: Simplify right side
    142,808.08x = 15,427,129,331.22
  5. Step 5: Solve for x
    x = 15,427,129,331.22/142,808.08
  6. Step 6: Final answer
    x = 108,027.01

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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.