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Finding the Fourth Proportional to 113,109.40, 169,712.70 and 57,705.40

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Solution

The fourth proportional to 113,109.40, 169,712.70 and 57,705.40 is: 86,582.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,109.40 : 169,712.70 = 57,705.40 : x
  2. Step 2: Convert to fraction form
    113,109.40/169,712.70 = 57,705.40/x
  3. Step 3: Cross multiply
    113,109.40x = 169,712.70 × 57,705.40
  4. Step 4: Simplify right side
    113,109.40x = 9,793,339,238.58
  5. Step 5: Solve for x
    x = 9,793,339,238.58/113,109.40
  6. Step 6: Final answer
    x = 86,582.89

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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.