Home / 121,019.60-181,529.40-74,298.80

Finding the Fourth Proportional to 121,019.60, 181,529.40 and 74,298.80

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Solution

The fourth proportional to 121,019.60, 181,529.40 and 74,298.80 is: 111,448.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,019.60 : 181,529.40 = 74,298.80 : x
  2. Step 2: Convert to fraction form
    121,019.60/181,529.40 = 74,298.80/x
  3. Step 3: Cross multiply
    121,019.60x = 181,529.40 × 74,298.80
  4. Step 4: Simplify right side
    121,019.60x = 13,487,416,584.72
  5. Step 5: Solve for x
    x = 13,487,416,584.72/121,019.60
  6. Step 6: Final answer
    x = 111,448.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.