Home / 186,065.40-279,011.70-80,830.20

Finding the Fourth Proportional to 186,065.40, 279,011.70 and 80,830.20

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Solution

The fourth proportional to 186,065.40, 279,011.70 and 80,830.20 is: 121,207.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,065.40 : 279,011.70 = 80,830.20 : x
  2. Step 2: Convert to fraction form
    186,065.40/279,011.70 = 80,830.20/x
  3. Step 3: Cross multiply
    186,065.40x = 279,011.70 × 80,830.20
  4. Step 4: Simplify right side
    186,065.40x = 22,552,571,513.34
  5. Step 5: Solve for x
    x = 22,552,571,513.34/186,065.40
  6. Step 6: Final answer
    x = 121,207.77

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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.