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Finding the Fourth Proportional to 173,354.81, 239,158.39 and 105,360.83

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Solution

The fourth proportional to 173,354.81, 239,158.39 and 105,360.83 is: 145,354.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,354.81 : 239,158.39 = 105,360.83 : x
  2. Step 2: Convert to fraction form
    173,354.81/239,158.39 = 105,360.83/x
  3. Step 3: Cross multiply
    173,354.81x = 239,158.39 × 105,360.83
  4. Step 4: Simplify right side
    173,354.81x = 25,197,926,471.86
  5. Step 5: Solve for x
    x = 25,197,926,471.86/173,354.81
  6. Step 6: Final answer
    x = 145,354.64

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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.