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Finding the Fourth Proportional to 112,993.86, 155,930.12 and 65,246.16

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Solution

The fourth proportional to 112,993.86, 155,930.12 and 65,246.16 is: 90,038.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,993.86 : 155,930.12 = 65,246.16 : x
  2. Step 2: Convert to fraction form
    112,993.86/155,930.12 = 65,246.16/x
  3. Step 3: Cross multiply
    112,993.86x = 155,930.12 × 65,246.16
  4. Step 4: Simplify right side
    112,993.86x = 10,173,841,232.11
  5. Step 5: Solve for x
    x = 10,173,841,232.11/112,993.86
  6. Step 6: Final answer
    x = 90,038.89

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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.