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Finding the Fourth Proportional to 123,662,707.80, 185,494,061.70 and 120,828,355.80

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Solution

The fourth proportional to 123,662,707.80, 185,494,061.70 and 120,828,355.80 is: 181,242,533.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,662,707.80 : 185,494,061.70 = 120,828,355.80 : x
  2. Step 2: Convert to fraction form
    123,662,707.80/185,494,061.70 = 120,828,355.80/x
  3. Step 3: Cross multiply
    123,662,707.80x = 185,494,061.70 × 120,828,355.80
  4. Step 4: Simplify right side
    123,662,707.80x = 22,412,942,485,874,752
  5. Step 5: Solve for x
    x = 22,412,942,485,874,752/123,662,707.80
  6. Step 6: Final answer
    x = 181,242,533.70

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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.