Home / 138,712,997.04-207,919,313.64-90,225,501.36

Finding the Fourth Proportional to 138,712,997.04, 207,919,313.64 and 90,225,501.36

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Solution

The fourth proportional to 138,712,997.04, 207,919,313.64 and 90,225,501.36 is: 135,240,566.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,712,997.04 : 207,919,313.64 = 90,225,501.36 : x
  2. Step 2: Convert to fraction form
    138,712,997.04/207,919,313.64 = 90,225,501.36/x
  3. Step 3: Cross multiply
    138,712,997.04x = 207,919,313.64 × 90,225,501.36
  4. Step 4: Simplify right side
    138,712,997.04x = 18,759,624,315,596,084
  5. Step 5: Solve for x
    x = 18,759,624,315,596,084/138,712,997.04
  6. Step 6: Final answer
    x = 135,240,566.61

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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.