Home / 133,109.18-183,668.98-78,653.76

Finding the Fourth Proportional to 133,109.18, 183,668.98 and 78,653.76

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Solution

The fourth proportional to 133,109.18, 183,668.98 and 78,653.76 is: 108,529.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,109.18 : 183,668.98 = 78,653.76 : x
  2. Step 2: Convert to fraction form
    133,109.18/183,668.98 = 78,653.76/x
  3. Step 3: Cross multiply
    133,109.18x = 183,668.98 × 78,653.76
  4. Step 4: Simplify right side
    133,109.18x = 14,446,255,872.36
  5. Step 5: Solve for x
    x = 14,446,255,872.36/133,109.18
  6. Step 6: Final answer
    x = 108,529.37

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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.