Home / 142,240.06-196,284.03-78,565.54

Finding the Fourth Proportional to 142,240.06, 196,284.03 and 78,565.54

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Solution

The fourth proportional to 142,240.06, 196,284.03 and 78,565.54 is: 108,416.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,240.06 : 196,284.03 = 78,565.54 : x
  2. Step 2: Convert to fraction form
    142,240.06/196,284.03 = 78,565.54/x
  3. Step 3: Cross multiply
    142,240.06x = 196,284.03 × 78,565.54
  4. Step 4: Simplify right side
    142,240.06x = 15,421,160,810.33
  5. Step 5: Solve for x
    x = 15,421,160,810.33/142,240.06
  6. Step 6: Final answer
    x = 108,416.44

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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.