Home / 117,442.16-162,002.40-74,952.80

Finding the Fourth Proportional to 117,442.16, 162,002.40 and 74,952.80

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Solution

The fourth proportional to 117,442.16, 162,002.40 and 74,952.80 is: 103,391.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,442.16 : 162,002.40 = 74,952.80 : x
  2. Step 2: Convert to fraction form
    117,442.16/162,002.40 = 74,952.80/x
  3. Step 3: Cross multiply
    117,442.16x = 162,002.40 × 74,952.80
  4. Step 4: Simplify right side
    117,442.16x = 12,142,533,486.72
  5. Step 5: Solve for x
    x = 12,142,533,486.72/117,442.16
  6. Step 6: Final answer
    x = 103,391.61

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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.