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Finding the Fourth Proportional to 112,656.80, 168,547.80 and 73,290.80

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Solution

The fourth proportional to 112,656.80, 168,547.80 and 73,290.80 is: 109,651.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,656.80 : 168,547.80 = 73,290.80 : x
  2. Step 2: Convert to fraction form
    112,656.80/168,547.80 = 73,290.80/x
  3. Step 3: Cross multiply
    112,656.80x = 168,547.80 × 73,290.80
  4. Step 4: Simplify right side
    112,656.80x = 12,353,003,100.24
  5. Step 5: Solve for x
    x = 12,353,003,100.24/112,656.80
  6. Step 6: Final answer
    x = 109,651.64

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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.