Home / 210,117,846.80-315,224,009.40-123,811,828.40

Finding the Fourth Proportional to 210,117,846.80, 315,224,009.40 and 123,811,828.40

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Solution

The fourth proportional to 210,117,846.80, 315,224,009.40 and 123,811,828.40 is: 185,745,578.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,117,846.80 : 315,224,009.40 = 123,811,828.40 : x
  2. Step 2: Convert to fraction form
    210,117,846.80/315,224,009.40 = 123,811,828.40/x
  3. Step 3: Cross multiply
    210,117,846.80x = 315,224,009.40 × 123,811,828.40
  4. Step 4: Simplify right side
    210,117,846.80x = 39,028,460,959,392,784
  5. Step 5: Solve for x
    x = 39,028,460,959,392,784/210,117,846.80
  6. Step 6: Final answer
    x = 185,745,578.27

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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.