Home / 173,398.21-239,261.72-105,378.86

Finding the Fourth Proportional to 173,398.21, 239,261.72 and 105,378.86

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Solution

The fourth proportional to 173,398.21, 239,261.72 and 105,378.86 is: 145,405.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,398.21 : 239,261.72 = 105,378.86 : x
  2. Step 2: Convert to fraction form
    173,398.21/239,261.72 = 105,378.86/x
  3. Step 3: Cross multiply
    173,398.21x = 239,261.72 × 105,378.86
  4. Step 4: Simplify right side
    173,398.21x = 25,213,127,366.50
  5. Step 5: Solve for x
    x = 25,213,127,366.50/173,398.21
  6. Step 6: Final answer
    x = 145,405.93

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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.