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Finding the Fourth Proportional to 139,248,001.90, 208,872,002.85 and 139,248,001.90

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Solution

The fourth proportional to 139,248,001.90, 208,872,002.85 and 139,248,001.90 is: 208,872,002.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,248,001.90 : 208,872,002.85 = 139,248,001.90 : x
  2. Step 2: Convert to fraction form
    139,248,001.90/208,872,002.85 = 139,248,001.90/x
  3. Step 3: Cross multiply
    139,248,001.90x = 208,872,002.85 × 139,248,001.90
  4. Step 4: Simplify right side
    139,248,001.90x = 29,085,009,049,713,604
  5. Step 5: Solve for x
    x = 29,085,009,049,713,604/139,248,001.90
  6. Step 6: Final answer
    x = 208,872,002.85

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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.