Home / 100,451.55-150,317.55-86,989.35

Finding the Fourth Proportional to 100,451.55, 150,317.55 and 86,989.35

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Solution

The fourth proportional to 100,451.55, 150,317.55 and 86,989.35 is: 130,172.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,451.55 : 150,317.55 = 86,989.35 : x
  2. Step 2: Convert to fraction form
    100,451.55/150,317.55 = 86,989.35/x
  3. Step 3: Cross multiply
    100,451.55x = 150,317.55 × 86,989.35
  4. Step 4: Simplify right side
    100,451.55x = 13,076,025,216.50
  5. Step 5: Solve for x
    x = 13,076,025,216.50/100,451.55
  6. Step 6: Final answer
    x = 130,172.46

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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.