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Finding the Fourth Proportional to 112,365.20, 168,620.70 and 64,980.20

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Solution

The fourth proportional to 112,365.20, 168,620.70 and 64,980.20 is: 97,512.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,365.20 : 168,620.70 = 64,980.20 : x
  2. Step 2: Convert to fraction form
    112,365.20/168,620.70 = 64,980.20/x
  3. Step 3: Cross multiply
    112,365.20x = 168,620.70 × 64,980.20
  4. Step 4: Simplify right side
    112,365.20x = 10,957,006,810.14
  5. Step 5: Solve for x
    x = 10,957,006,810.14/112,365.20
  6. Step 6: Final answer
    x = 97,512.46

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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.