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Finding the Fourth Proportional to 113,258, 169,888.44 and 39,386

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Solution

The fourth proportional to 113,258, 169,888.44 and 39,386 is: 59,079.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,258 : 169,888.44 = 39,386 : x
  2. Step 2: Convert to fraction form
    113,258/169,888.44 = 39,386/x
  3. Step 3: Cross multiply
    113,258x = 169,888.44 × 39,386
  4. Step 4: Simplify right side
    113,258x = 6,691,226,097.84
  5. Step 5: Solve for x
    x = 6,691,226,097.84/113,258
  6. Step 6: Final answer
    x = 59,079.50

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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.