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Finding the Fourth Proportional to 113,111.60, 169,559.40 and 42,015.20

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Solution

The fourth proportional to 113,111.60, 169,559.40 and 42,015.20 is: 62,982.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,111.60 : 169,559.40 = 42,015.20 : x
  2. Step 2: Convert to fraction form
    113,111.60/169,559.40 = 42,015.20/x
  3. Step 3: Cross multiply
    113,111.60x = 169,559.40 × 42,015.20
  4. Step 4: Simplify right side
    113,111.60x = 7,124,072,102.88
  5. Step 5: Solve for x
    x = 7,124,072,102.88/113,111.60
  6. Step 6: Final answer
    x = 62,982.68

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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.