Home / 145,615.38-218,423.16-40,434.36

Finding the Fourth Proportional to 145,615.38, 218,423.16 and 40,434.36

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Solution

The fourth proportional to 145,615.38, 218,423.16 and 40,434.36 is: 60,651.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,615.38 : 218,423.16 = 40,434.36 : x
  2. Step 2: Convert to fraction form
    145,615.38/218,423.16 = 40,434.36/x
  3. Step 3: Cross multiply
    145,615.38x = 218,423.16 × 40,434.36
  4. Step 4: Simplify right side
    145,615.38x = 8,831,800,683.78
  5. Step 5: Solve for x
    x = 8,831,800,683.78/145,615.38
  6. Step 6: Final answer
    x = 60,651.56

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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.