Home / 128,513,118.92-177,494,123.00-86,624,939.30

Finding the Fourth Proportional to 128,513,118.92, 177,494,123.00 and 86,624,939.30

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Solution

The fourth proportional to 128,513,118.92, 177,494,123.00 and 86,624,939.30 is: 119,640,841.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,513,118.92 : 177,494,123.00 = 86,624,939.30 : x
  2. Step 2: Convert to fraction form
    128,513,118.92/177,494,123.00 = 86,624,939.30/x
  3. Step 3: Cross multiply
    128,513,118.92x = 177,494,123.00 × 86,624,939.30
  4. Step 4: Simplify right side
    128,513,118.92x = 15,375,417,630,310,826
  5. Step 5: Solve for x
    x = 15,375,417,630,310,826/128,513,118.92
  6. Step 6: Final answer
    x = 119,640,841.03

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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.