Home / 140,823.16-210,962.54-78,304.12

Finding the Fourth Proportional to 140,823.16, 210,962.54 and 78,304.12

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Solution

The fourth proportional to 140,823.16, 210,962.54 and 78,304.12 is: 117,304.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,823.16 : 210,962.54 = 78,304.12 : x
  2. Step 2: Convert to fraction form
    140,823.16/210,962.54 = 78,304.12/x
  3. Step 3: Cross multiply
    140,823.16x = 210,962.54 × 78,304.12
  4. Step 4: Simplify right side
    140,823.16x = 16,519,236,047.66
  5. Step 5: Solve for x
    x = 16,519,236,047.66/140,823.16
  6. Step 6: Final answer
    x = 117,304.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.