Home / 113,228.79-156,255.73-65,485.21

Finding the Fourth Proportional to 113,228.79, 156,255.73 and 65,485.21

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Solution

The fourth proportional to 113,228.79, 156,255.73 and 65,485.21 is: 90,369.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,228.79 : 156,255.73 = 65,485.21 : x
  2. Step 2: Convert to fraction form
    113,228.79/156,255.73 = 65,485.21/x
  3. Step 3: Cross multiply
    113,228.79x = 156,255.73 × 65,485.21
  4. Step 4: Simplify right side
    113,228.79x = 10,232,439,655.03
  5. Step 5: Solve for x
    x = 10,232,439,655.03/113,228.79
  6. Step 6: Final answer
    x = 90,369.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.