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Finding the Fourth Proportional to 112,649.60, 168,801.60 and 97,788.80

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Solution

The fourth proportional to 112,649.60, 168,801.60 and 97,788.80 is: 146,533.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,649.60 : 168,801.60 = 97,788.80 : x
  2. Step 2: Convert to fraction form
    112,649.60/168,801.60 = 97,788.80/x
  3. Step 3: Cross multiply
    112,649.60x = 168,801.60 × 97,788.80
  4. Step 4: Simplify right side
    112,649.60x = 16,506,905,902.08
  5. Step 5: Solve for x
    x = 16,506,905,902.08/112,649.60
  6. Step 6: Final answer
    x = 146,533.20

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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.