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Finding the Fourth Proportional to 112,658.40, 168,987.60 and 102,290.40

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Solution

The fourth proportional to 112,658.40, 168,987.60 and 102,290.40 is: 153,435.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,658.40 : 168,987.60 = 102,290.40 : x
  2. Step 2: Convert to fraction form
    112,658.40/168,987.60 = 102,290.40/x
  3. Step 3: Cross multiply
    112,658.40x = 168,987.60 × 102,290.40
  4. Step 4: Simplify right side
    112,658.40x = 17,285,809,199.04
  5. Step 5: Solve for x
    x = 17,285,809,199.04/112,658.40
  6. Step 6: Final answer
    x = 153,435.60

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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.