Home / 140,740.94-194,222.58-77,078.72

Finding the Fourth Proportional to 140,740.94, 194,222.58 and 77,078.72

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Solution

The fourth proportional to 140,740.94, 194,222.58 and 77,078.72 is: 106,368.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,740.94 : 194,222.58 = 77,078.72 : x
  2. Step 2: Convert to fraction form
    140,740.94/194,222.58 = 77,078.72/x
  3. Step 3: Cross multiply
    140,740.94x = 194,222.58 × 77,078.72
  4. Step 4: Simplify right side
    140,740.94x = 14,970,428,058.01
  5. Step 5: Solve for x
    x = 14,970,428,058.01/140,740.94
  6. Step 6: Final answer
    x = 106,368.68

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1.5x scale

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.