Home / 121,949,998.10-168,291,158.91-66,195,382.31

Finding the Fourth Proportional to 121,949,998.10, 168,291,158.91 and 66,195,382.31

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Solution

The fourth proportional to 121,949,998.10, 168,291,158.91 and 66,195,382.31 is: 91,349,715.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,949,998.10 : 168,291,158.91 = 66,195,382.31 : x
  2. Step 2: Convert to fraction form
    121,949,998.10/168,291,158.91 = 66,195,382.31/x
  3. Step 3: Cross multiply
    121,949,998.10x = 168,291,158.91 × 66,195,382.31
  4. Step 4: Simplify right side
    121,949,998.10x = 11,140,097,603,354,496
  5. Step 5: Solve for x
    x = 11,140,097,603,354,496/121,949,998.10
  6. Step 6: Final answer
    x = 91,349,715.27

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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.