Home / 103,188.96-142,340.27-64,887.75

Finding the Fourth Proportional to 103,188.96, 142,340.27 and 64,887.75

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Solution

The fourth proportional to 103,188.96, 142,340.27 and 64,887.75 is: 89,507.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,188.96 : 142,340.27 = 64,887.75 : x
  2. Step 2: Convert to fraction form
    103,188.96/142,340.27 = 64,887.75/x
  3. Step 3: Cross multiply
    103,188.96x = 142,340.27 × 64,887.75
  4. Step 4: Simplify right side
    103,188.96x = 9,236,139,142.99
  5. Step 5: Solve for x
    x = 9,236,139,142.99/103,188.96
  6. Step 6: Final answer
    x = 89,507.05

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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.