Home / 208,109,007.69-287,169,502.14-115,272,169.89

Finding the Fourth Proportional to 208,109,007.69, 287,169,502.14 and 115,272,169.89

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Solution

The fourth proportional to 208,109,007.69, 287,169,502.14 and 115,272,169.89 is: 159,064,002.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,109,007.69 : 287,169,502.14 = 115,272,169.89 : x
  2. Step 2: Convert to fraction form
    208,109,007.69/287,169,502.14 = 115,272,169.89/x
  3. Step 3: Cross multiply
    208,109,007.69x = 287,169,502.14 × 115,272,169.89
  4. Step 4: Simplify right side
    208,109,007.69x = 33,102,651,637,908,796
  5. Step 5: Solve for x
    x = 33,102,651,637,908,796/208,109,007.69
  6. Step 6: Final answer
    x = 159,064,002.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.