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Finding the Fourth Proportional to 123,673,218.80, 185,509,828.20 and 42,894,186.80

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Solution

The fourth proportional to 123,673,218.80, 185,509,828.20 and 42,894,186.80 is: 64,341,280.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,673,218.80 : 185,509,828.20 = 42,894,186.80 : x
  2. Step 2: Convert to fraction form
    123,673,218.80/185,509,828.20 = 42,894,186.80/x
  3. Step 3: Cross multiply
    123,673,218.80x = 185,509,828.20 × 42,894,186.80
  4. Step 4: Simplify right side
    123,673,218.80x = 7,957,293,224,046,707
  5. Step 5: Solve for x
    x = 7,957,293,224,046,707/123,673,218.80
  6. Step 6: Final answer
    x = 64,341,280.20

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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.