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Finding the Fourth Proportional to 113,392.71, 170,088.93 and 38,520.63

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Solution

The fourth proportional to 113,392.71, 170,088.93 and 38,520.63 is: 57,780.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,392.71 : 170,088.93 = 38,520.63 : x
  2. Step 2: Convert to fraction form
    113,392.71/170,088.93 = 38,520.63/x
  3. Step 3: Cross multiply
    113,392.71x = 170,088.93 × 38,520.63
  4. Step 4: Simplify right side
    113,392.71x = 6,551,932,739.63
  5. Step 5: Solve for x
    x = 6,551,932,739.63/113,392.71
  6. Step 6: Final answer
    x = 57,780.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.