Home / 103,173.39-142,318.80-64,872.24

Finding the Fourth Proportional to 103,173.39, 142,318.80 and 64,872.24

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Solution

The fourth proportional to 103,173.39, 142,318.80 and 64,872.24 is: 89,485.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,173.39 : 142,318.80 = 64,872.24 : x
  2. Step 2: Convert to fraction form
    103,173.39/142,318.80 = 64,872.24/x
  3. Step 3: Cross multiply
    103,173.39x = 142,318.80 × 64,872.24
  4. Step 4: Simplify right side
    103,173.39x = 9,232,539,350.11
  5. Step 5: Solve for x
    x = 9,232,539,350.11/103,173.39
  6. Step 6: Final answer
    x = 89,485.66

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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.