Home / 115,631.40-173,403.90-80,466.60

Finding the Fourth Proportional to 115,631.40, 173,403.90 and 80,466.60

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Solution

The fourth proportional to 115,631.40, 173,403.90 and 80,466.60 is: 120,669.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,631.40 : 173,403.90 = 80,466.60 : x
  2. Step 2: Convert to fraction form
    115,631.40/173,403.90 = 80,466.60/x
  3. Step 3: Cross multiply
    115,631.40x = 173,403.90 × 80,466.60
  4. Step 4: Simplify right side
    115,631.40x = 13,953,222,259.74
  5. Step 5: Solve for x
    x = 13,953,222,259.74/115,631.40
  6. Step 6: Final answer
    x = 120,669.84

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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.