Home / 145,420.52-218,135.64-40,230.68

Finding the Fourth Proportional to 145,420.52, 218,135.64 and 40,230.68

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Solution

The fourth proportional to 145,420.52, 218,135.64 and 40,230.68 is: 60,347.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,420.52 : 218,135.64 = 40,230.68 : x
  2. Step 2: Convert to fraction form
    145,420.52/218,135.64 = 40,230.68/x
  3. Step 3: Cross multiply
    145,420.52x = 218,135.64 × 40,230.68
  4. Step 4: Simplify right side
    145,420.52x = 8,775,745,129.44
  5. Step 5: Solve for x
    x = 8,775,745,129.44/145,420.52
  6. Step 6: Final answer
    x = 60,347.36

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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.