Home / 122,019,436.53-168,411,262.79-72,487,326.95

Finding the Fourth Proportional to 122,019,436.53, 168,411,262.79 and 72,487,326.95

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Solution

The fourth proportional to 122,019,436.53, 168,411,262.79 and 72,487,326.95 is: 100,047,030.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,019,436.53 : 168,411,262.79 = 72,487,326.95 : x
  2. Step 2: Convert to fraction form
    122,019,436.53/168,411,262.79 = 72,487,326.95/x
  3. Step 3: Cross multiply
    122,019,436.53x = 168,411,262.79 × 72,487,326.95
  4. Step 4: Simplify right side
    122,019,436.53x = 12,207,682,268,839,116
  5. Step 5: Solve for x
    x = 12,207,682,268,839,116/122,019,436.53
  6. Step 6: Final answer
    x = 100,047,030.34

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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.