Home / 145,823.60-218,708.40-40,620.80

Finding the Fourth Proportional to 145,823.60, 218,708.40 and 40,620.80

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Solution

The fourth proportional to 145,823.60, 218,708.40 and 40,620.80 is: 60,923.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,823.60 : 218,708.40 = 40,620.80 : x
  2. Step 2: Convert to fraction form
    145,823.60/218,708.40 = 40,620.80/x
  3. Step 3: Cross multiply
    145,823.60x = 218,708.40 × 40,620.80
  4. Step 4: Simplify right side
    145,823.60x = 8,884,110,174.72
  5. Step 5: Solve for x
    x = 8,884,110,174.72/145,823.60
  6. Step 6: Final answer
    x = 60,923.68

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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.