Home / 145,031.28-217,448.48-73,778.80

Finding the Fourth Proportional to 145,031.28, 217,448.48 and 73,778.80

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Solution

The fourth proportional to 145,031.28, 217,448.48 and 73,778.80 is: 110,618.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,031.28 : 217,448.48 = 73,778.80 : x
  2. Step 2: Convert to fraction form
    145,031.28/217,448.48 = 73,778.80/x
  3. Step 3: Cross multiply
    145,031.28x = 217,448.48 × 73,778.80
  4. Step 4: Simplify right side
    145,031.28x = 16,043,087,916.22
  5. Step 5: Solve for x
    x = 16,043,087,916.22/145,031.28
  6. Step 6: Final answer
    x = 110,618.12

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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.