Home / 105,571,879.56-145,637,422.32-91,613,643.60

Finding the Fourth Proportional to 105,571,879.56, 145,637,422.32 and 91,613,643.60

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Solution

The fourth proportional to 105,571,879.56, 145,637,422.32 and 91,613,643.60 is: 126,381,901.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,571,879.56 : 145,637,422.32 = 91,613,643.60 : x
  2. Step 2: Convert to fraction form
    105,571,879.56/145,637,422.32 = 91,613,643.60/x
  3. Step 3: Cross multiply
    105,571,879.56x = 145,637,422.32 × 91,613,643.60
  4. Step 4: Simplify right side
    105,571,879.56x = 13,342,374,903,247,164
  5. Step 5: Solve for x
    x = 13,342,374,903,247,164/105,571,879.56
  6. Step 6: Final answer
    x = 126,381,901.68

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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.