Home / 121,916,101.95-168,244,661.16-66,161,510.25

Finding the Fourth Proportional to 121,916,101.95, 168,244,661.16 and 66,161,510.25

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Solution

The fourth proportional to 121,916,101.95, 168,244,661.16 and 66,161,510.25 is: 91,303,123.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,916,101.95 : 168,244,661.16 = 66,161,510.25 : x
  2. Step 2: Convert to fraction form
    121,916,101.95/168,244,661.16 = 66,161,510.25/x
  3. Step 3: Cross multiply
    121,916,101.95x = 168,244,661.16 × 66,161,510.25
  4. Step 4: Simplify right side
    121,916,101.95x = 11,131,320,873,845,116
  5. Step 5: Solve for x
    x = 11,131,320,873,845,116/121,916,101.95
  6. Step 6: Final answer
    x = 91,303,123.18

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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.