Home / 123,968.40-185,952.60-76,621.20

Finding the Fourth Proportional to 123,968.40, 185,952.60 and 76,621.20

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Solution

The fourth proportional to 123,968.40, 185,952.60 and 76,621.20 is: 114,931.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,968.40 : 185,952.60 = 76,621.20 : x
  2. Step 2: Convert to fraction form
    123,968.40/185,952.60 = 76,621.20/x
  3. Step 3: Cross multiply
    123,968.40x = 185,952.60 × 76,621.20
  4. Step 4: Simplify right side
    123,968.40x = 14,247,911,355.12
  5. Step 5: Solve for x
    x = 14,247,911,355.12/123,968.40
  6. Step 6: Final answer
    x = 114,931.80

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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.