Home / 142,830.24-197,096.40-86,272.80

Finding the Fourth Proportional to 142,830.24, 197,096.40 and 86,272.80

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Solution

The fourth proportional to 142,830.24, 197,096.40 and 86,272.80 is: 119,050.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,830.24 : 197,096.40 = 86,272.80 : x
  2. Step 2: Convert to fraction form
    142,830.24/197,096.40 = 86,272.80/x
  3. Step 3: Cross multiply
    142,830.24x = 197,096.40 × 86,272.80
  4. Step 4: Simplify right side
    142,830.24x = 17,004,058,297.92
  5. Step 5: Solve for x
    x = 17,004,058,297.92/142,830.24
  6. Step 6: Final answer
    x = 119,050.83

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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.