Home / 114,315.32-157,809.84-76,138.40

Finding the Fourth Proportional to 114,315.32, 157,809.84 and 76,138.40

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Solution

The fourth proportional to 114,315.32, 157,809.84 and 76,138.40 is: 105,107.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,315.32 : 157,809.84 = 76,138.40 : x
  2. Step 2: Convert to fraction form
    114,315.32/157,809.84 = 76,138.40/x
  3. Step 3: Cross multiply
    114,315.32x = 157,809.84 × 76,138.40
  4. Step 4: Simplify right side
    114,315.32x = 12,015,388,721.86
  5. Step 5: Solve for x
    x = 12,015,388,721.86/114,315.32
  6. Step 6: Final answer
    x = 105,107.42

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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.