Home / 142,148.24-196,164.98-77,617.60

Finding the Fourth Proportional to 142,148.24, 196,164.98 and 77,617.60

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Solution

The fourth proportional to 142,148.24, 196,164.98 and 77,617.60 is: 107,112.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,148.24 : 196,164.98 = 77,617.60 : x
  2. Step 2: Convert to fraction form
    142,148.24/196,164.98 = 77,617.60/x
  3. Step 3: Cross multiply
    142,148.24x = 196,164.98 × 77,617.60
  4. Step 4: Simplify right side
    142,148.24x = 15,225,854,951.65
  5. Step 5: Solve for x
    x = 15,225,854,951.65/142,148.24
  6. Step 6: Final answer
    x = 107,112.51

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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.