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Finding the Fourth Proportional to 111,875.60, 168,007.80 and 108,376.40

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Solution

The fourth proportional to 111,875.60, 168,007.80 and 108,376.40 is: 162,752.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,875.60 : 168,007.80 = 108,376.40 : x
  2. Step 2: Convert to fraction form
    111,875.60/168,007.80 = 108,376.40/x
  3. Step 3: Cross multiply
    111,875.60x = 168,007.80 × 108,376.40
  4. Step 4: Simplify right side
    111,875.60x = 18,208,080,535.92
  5. Step 5: Solve for x
    x = 18,208,080,535.92/111,875.60
  6. Step 6: Final answer
    x = 162,752.92

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1.5x scale

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.