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Finding the Fourth Proportional to 118,389.60, 163,339.74 and 84,403.62

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Solution

The fourth proportional to 118,389.60, 163,339.74 and 84,403.62 is: 116,449.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,389.60 : 163,339.74 = 84,403.62 : x
  2. Step 2: Convert to fraction form
    118,389.60/163,339.74 = 84,403.62/x
  3. Step 3: Cross multiply
    118,389.60x = 163,339.74 × 84,403.62
  4. Step 4: Simplify right side
    118,389.60x = 13,786,465,345.86
  5. Step 5: Solve for x
    x = 13,786,465,345.86/118,389.60
  6. Step 6: Final answer
    x = 116,449.97

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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.