Home / 189,356.25-261,311.23-103,315.18

Finding the Fourth Proportional to 189,356.25, 261,311.23 and 103,315.18

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Solution

The fourth proportional to 189,356.25, 261,311.23 and 103,315.18 is: 142,574.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,356.25 : 261,311.23 = 103,315.18 : x
  2. Step 2: Convert to fraction form
    189,356.25/261,311.23 = 103,315.18/x
  3. Step 3: Cross multiply
    189,356.25x = 261,311.23 × 103,315.18
  4. Step 4: Simplify right side
    189,356.25x = 26,997,415,994.36
  5. Step 5: Solve for x
    x = 26,997,415,994.36/189,356.25
  6. Step 6: Final answer
    x = 142,574.73

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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.