Home / 113,979.12-157,288.08-63,678.12

Finding the Fourth Proportional to 113,979.12, 157,288.08 and 63,678.12

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Solution

The fourth proportional to 113,979.12, 157,288.08 and 63,678.12 is: 87,874.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,979.12 : 157,288.08 = 63,678.12 : x
  2. Step 2: Convert to fraction form
    113,979.12/157,288.08 = 63,678.12/x
  3. Step 3: Cross multiply
    113,979.12x = 157,288.08 × 63,678.12
  4. Step 4: Simplify right side
    113,979.12x = 10,015,809,232.81
  5. Step 5: Solve for x
    x = 10,015,809,232.81/113,979.12
  6. Step 6: Final answer
    x = 87,874.07

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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.