Home / 448,019.87-671,923.65-128,161.88

Finding the Fourth Proportional to 448,019.87, 671,923.65 and 128,161.88

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Solution

The fourth proportional to 448,019.87, 671,923.65 and 128,161.88 is: 192,212.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,019.87 : 671,923.65 = 128,161.88 : x
  2. Step 2: Convert to fraction form
    448,019.87/671,923.65 = 128,161.88/x
  3. Step 3: Cross multiply
    448,019.87x = 671,923.65 × 128,161.88
  4. Step 4: Simplify right side
    448,019.87x = 86,114,998,200.46
  5. Step 5: Solve for x
    x = 86,114,998,200.46/448,019.87
  6. Step 6: Final answer
    x = 192,212.45

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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.