Home / 137,099,009.92-189,146,985.66-90,081,391.29

Finding the Fourth Proportional to 137,099,009.92, 189,146,985.66 and 90,081,391.29

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Solution

The fourth proportional to 137,099,009.92, 189,146,985.66 and 90,081,391.29 is: 124,279,698.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,099,009.92 : 189,146,985.66 = 90,081,391.29 : x
  2. Step 2: Convert to fraction form
    137,099,009.92/189,146,985.66 = 90,081,391.29/x
  3. Step 3: Cross multiply
    137,099,009.92x = 189,146,985.66 × 90,081,391.29
  4. Step 4: Simplify right side
    137,099,009.92x = 17,038,623,626,790,114
  5. Step 5: Solve for x
    x = 17,038,623,626,790,114/137,099,009.92
  6. Step 6: Final answer
    x = 124,279,698.57

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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.