Home / 209,751,439.47-289,458,223.53-121,697,867.13

Finding the Fourth Proportional to 209,751,439.47, 289,458,223.53 and 121,697,867.13

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Solution

The fourth proportional to 209,751,439.47, 289,458,223.53 and 121,697,867.13 is: 167,943,774.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,751,439.47 : 289,458,223.53 = 121,697,867.13 : x
  2. Step 2: Convert to fraction form
    209,751,439.47/289,458,223.53 = 121,697,867.13/x
  3. Step 3: Cross multiply
    209,751,439.47x = 289,458,223.53 × 121,697,867.13
  4. Step 4: Simplify right side
    209,751,439.47x = 35,226,448,426,839,776
  5. Step 5: Solve for x
    x = 35,226,448,426,839,776/209,751,439.47
  6. Step 6: Final answer
    x = 167,943,774.38

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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.