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Finding the Fourth Proportional to 103,611.79, 142,832.05 and 73,303.62

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Solution

The fourth proportional to 103,611.79, 142,832.05 and 73,303.62 is: 101,051.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,611.79 : 142,832.05 = 73,303.62 : x
  2. Step 2: Convert to fraction form
    103,611.79/142,832.05 = 73,303.62/x
  3. Step 3: Cross multiply
    103,611.79x = 142,832.05 × 73,303.62
  4. Step 4: Simplify right side
    103,611.79x = 10,470,106,317.02
  5. Step 5: Solve for x
    x = 10,470,106,317.02/103,611.79
  6. Step 6: Final answer
    x = 101,051.30

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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.