Home / 107,448,019.20-161,172,028.80-90,819,820.80

Finding the Fourth Proportional to 107,448,019.20, 161,172,028.80 and 90,819,820.80

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Solution

The fourth proportional to 107,448,019.20, 161,172,028.80 and 90,819,820.80 is: 136,229,731.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,448,019.20 : 161,172,028.80 = 90,819,820.80 : x
  2. Step 2: Convert to fraction form
    107,448,019.20/161,172,028.80 = 90,819,820.80/x
  3. Step 3: Cross multiply
    107,448,019.20x = 161,172,028.80 × 90,819,820.80
  4. Step 4: Simplify right side
    107,448,019.20x = 14,637,614,773,588,440
  5. Step 5: Solve for x
    x = 14,637,614,773,588,440/107,448,019.20
  6. Step 6: Final answer
    x = 136,229,731.20

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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.