Home / 145,556.40-218,344.68-56,780.40

Finding the Fourth Proportional to 145,556.40, 218,344.68 and 56,780.40

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Solution

The fourth proportional to 145,556.40, 218,344.68 and 56,780.40 is: 85,174.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,556.40 : 218,344.68 = 56,780.40 : x
  2. Step 2: Convert to fraction form
    145,556.40/218,344.68 = 56,780.40/x
  3. Step 3: Cross multiply
    145,556.40x = 218,344.68 × 56,780.40
  4. Step 4: Simplify right side
    145,556.40x = 12,397,698,268.27
  5. Step 5: Solve for x
    x = 12,397,698,268.27/145,556.40
  6. Step 6: Final answer
    x = 85,174.53

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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.