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Finding the Fourth Proportional to 103,654.44, 143,064.54 and 67,777.80

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Solution

The fourth proportional to 103,654.44, 143,064.54 and 67,777.80 is: 93,547.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,654.44 : 143,064.54 = 67,777.80 : x
  2. Step 2: Convert to fraction form
    103,654.44/143,064.54 = 67,777.80/x
  3. Step 3: Cross multiply
    103,654.44x = 143,064.54 × 67,777.80
  4. Step 4: Simplify right side
    103,654.44x = 9,696,599,779.21
  5. Step 5: Solve for x
    x = 9,696,599,779.21/103,654.44
  6. Step 6: Final answer
    x = 93,547.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.