Home / 142,728.24-197,033.40-100,323.12

Finding the Fourth Proportional to 142,728.24, 197,033.40 and 100,323.12

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Solution

The fourth proportional to 142,728.24, 197,033.40 and 100,323.12 is: 138,494.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,728.24 : 197,033.40 = 100,323.12 : x
  2. Step 2: Convert to fraction form
    142,728.24/197,033.40 = 100,323.12/x
  3. Step 3: Cross multiply
    142,728.24x = 197,033.40 × 100,323.12
  4. Step 4: Simplify right side
    142,728.24x = 19,767,005,432.21
  5. Step 5: Solve for x
    x = 19,767,005,432.21/142,728.24
  6. Step 6: Final answer
    x = 138,494.00

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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.