Home / 137,666,392.86-189,973,803.21-74,941,185.12

Finding the Fourth Proportional to 137,666,392.86, 189,973,803.21 and 74,941,185.12

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Solution

The fourth proportional to 137,666,392.86, 189,973,803.21 and 74,941,185.12 is: 103,415,667.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,666,392.86 : 189,973,803.21 = 74,941,185.12 : x
  2. Step 2: Convert to fraction form
    137,666,392.86/189,973,803.21 = 74,941,185.12/x
  3. Step 3: Cross multiply
    137,666,392.86x = 189,973,803.21 × 74,941,185.12
  4. Step 4: Simplify right side
    137,666,392.86x = 14,236,861,954,311,062
  5. Step 5: Solve for x
    x = 14,236,861,954,311,062/137,666,392.86
  6. Step 6: Final answer
    x = 103,415,667.82

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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.