Home / 121,949,995.38-168,291,155.16-66,195,379.59

Finding the Fourth Proportional to 121,949,995.38, 168,291,155.16 and 66,195,379.59

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Solution

The fourth proportional to 121,949,995.38, 168,291,155.16 and 66,195,379.59 is: 91,349,711.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,949,995.38 : 168,291,155.16 = 66,195,379.59 : x
  2. Step 2: Convert to fraction form
    121,949,995.38/168,291,155.16 = 66,195,379.59/x
  3. Step 3: Cross multiply
    121,949,995.38x = 168,291,155.16 × 66,195,379.59
  4. Step 4: Simplify right side
    121,949,995.38x = 11,140,096,897,455,788
  5. Step 5: Solve for x
    x = 11,140,096,897,455,788/121,949,995.38
  6. Step 6: Final answer
    x = 91,349,711.52

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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.