Home / 145,090.80-217,636.20-115,347.60

Finding the Fourth Proportional to 145,090.80, 217,636.20 and 115,347.60

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Solution

The fourth proportional to 145,090.80, 217,636.20 and 115,347.60 is: 173,021.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,090.80 : 217,636.20 = 115,347.60 : x
  2. Step 2: Convert to fraction form
    145,090.80/217,636.20 = 115,347.60/x
  3. Step 3: Cross multiply
    145,090.80x = 217,636.20 × 115,347.60
  4. Step 4: Simplify right side
    145,090.80x = 25,103,813,343.12
  5. Step 5: Solve for x
    x = 25,103,813,343.12/145,090.80
  6. Step 6: Final answer
    x = 173,021.40

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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.