Home / 85,220.40-127,644.71-70,261.32

Finding the Fourth Proportional to 85,220.40, 127,644.71 and 70,261.32

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Solution

The fourth proportional to 85,220.40, 127,644.71 and 70,261.32 is: 105,238.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,220.40 : 127,644.71 = 70,261.32 : x
  2. Step 2: Convert to fraction form
    85,220.40/127,644.71 = 70,261.32/x
  3. Step 3: Cross multiply
    85,220.40x = 127,644.71 × 70,261.32
  4. Step 4: Simplify right side
    85,220.40x = 8,968,485,464.31
  5. Step 5: Solve for x
    x = 8,968,485,464.31/85,220.40
  6. Step 6: Final answer
    x = 105,238.72

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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.