Home / 103,539.44-142,796.58-87,485.52

Finding the Fourth Proportional to 103,539.44, 142,796.58 and 87,485.52

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Solution

The fourth proportional to 103,539.44, 142,796.58 and 87,485.52 is: 120,655.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,539.44 : 142,796.58 = 87,485.52 : x
  2. Step 2: Convert to fraction form
    103,539.44/142,796.58 = 87,485.52/x
  3. Step 3: Cross multiply
    103,539.44x = 142,796.58 × 87,485.52
  4. Step 4: Simplify right side
    103,539.44x = 12,492,633,055.52
  5. Step 5: Solve for x
    x = 12,492,633,055.52/103,539.44
  6. Step 6: Final answer
    x = 120,655.79

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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.