Home / 213,025,009.10-319,537,513.65-121,192,004.30

Finding the Fourth Proportional to 213,025,009.10, 319,537,513.65 and 121,192,004.30

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Solution

The fourth proportional to 213,025,009.10, 319,537,513.65 and 121,192,004.30 is: 181,788,006.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,025,009.10 : 319,537,513.65 = 121,192,004.30 : x
  2. Step 2: Convert to fraction form
    213,025,009.10/319,537,513.65 = 121,192,004.30/x
  3. Step 3: Cross multiply
    213,025,009.10x = 319,537,513.65 × 121,192,004.30
  4. Step 4: Simplify right side
    213,025,009.10x = 38,725,391,728,282,104
  5. Step 5: Solve for x
    x = 38,725,391,728,282,104/213,025,009.10
  6. Step 6: Final answer
    x = 181,788,006.45

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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.