Home / 154,986,639.98-213,881,574.77-85,372,020.83

Finding the Fourth Proportional to 154,986,639.98, 213,881,574.77 and 85,372,020.83

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Solution

The fourth proportional to 154,986,639.98, 213,881,574.77 and 85,372,020.83 is: 117,813,395.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,986,639.98 : 213,881,574.77 = 85,372,020.83 : x
  2. Step 2: Convert to fraction form
    154,986,639.98/213,881,574.77 = 85,372,020.83/x
  3. Step 3: Cross multiply
    154,986,639.98x = 213,881,574.77 × 85,372,020.83
  4. Step 4: Simplify right side
    154,986,639.98x = 18,259,502,256,845,632
  5. Step 5: Solve for x
    x = 18,259,502,256,845,632/154,986,639.98
  6. Step 6: Final answer
    x = 117,813,395.14

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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.