Home / 113,879.40-157,219.14-75,690.72

Finding the Fourth Proportional to 113,879.40, 157,219.14 and 75,690.72

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Solution

The fourth proportional to 113,879.40, 157,219.14 and 75,690.72 is: 104,496.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,879.40 : 157,219.14 = 75,690.72 : x
  2. Step 2: Convert to fraction form
    113,879.40/157,219.14 = 75,690.72/x
  3. Step 3: Cross multiply
    113,879.40x = 157,219.14 × 75,690.72
  4. Step 4: Simplify right side
    113,879.40x = 11,900,029,904.38
  5. Step 5: Solve for x
    x = 11,900,029,904.38/113,879.40
  6. Step 6: Final answer
    x = 104,496.77

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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.