Home / 186,154.48-279,009.78-129,688.84

Finding the Fourth Proportional to 186,154.48, 279,009.78 and 129,688.84

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Solution

The fourth proportional to 186,154.48, 279,009.78 and 129,688.84 is: 194,378.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,154.48 : 279,009.78 = 129,688.84 : x
  2. Step 2: Convert to fraction form
    186,154.48/279,009.78 = 129,688.84/x
  3. Step 3: Cross multiply
    186,154.48x = 279,009.78 × 129,688.84
  4. Step 4: Simplify right side
    186,154.48x = 36,184,454,716.86
  5. Step 5: Solve for x
    x = 36,184,454,716.86/186,154.48
  6. Step 6: Final answer
    x = 194,378.64

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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.