Home / 145,420.50-218,135.60-40,230.66

Finding the Fourth Proportional to 145,420.50, 218,135.60 and 40,230.66

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Solution

The fourth proportional to 145,420.50, 218,135.60 and 40,230.66 is: 60,347.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,420.50 : 218,135.60 = 40,230.66 : x
  2. Step 2: Convert to fraction form
    145,420.50/218,135.60 = 40,230.66/x
  3. Step 3: Cross multiply
    145,420.50x = 218,135.60 × 40,230.66
  4. Step 4: Simplify right side
    145,420.50x = 8,775,739,157.50
  5. Step 5: Solve for x
    x = 8,775,739,157.50/145,420.50
  6. Step 6: Final answer
    x = 60,347.33

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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.