Home / 128,051,399.92-192,064,173.18-86,817,034.20

Finding the Fourth Proportional to 128,051,399.92, 192,064,173.18 and 86,817,034.20

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Solution

The fourth proportional to 128,051,399.92, 192,064,173.18 and 86,817,034.20 is: 130,216,787.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,051,399.92 : 192,064,173.18 = 86,817,034.20 : x
  2. Step 2: Convert to fraction form
    128,051,399.92/192,064,173.18 = 86,817,034.20/x
  3. Step 3: Cross multiply
    128,051,399.92x = 192,064,173.18 × 86,817,034.20
  4. Step 4: Simplify right side
    128,051,399.92x = 16,674,441,891,562,784
  5. Step 5: Solve for x
    x = 16,674,441,891,562,784/128,051,399.92
  6. Step 6: Final answer
    x = 130,216,787.18

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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.