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Finding the Fourth Proportional to 140,539.20, 210,808.80 and 70,555.20

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Solution

The fourth proportional to 140,539.20, 210,808.80 and 70,555.20 is: 105,832.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,539.20 : 210,808.80 = 70,555.20 : x
  2. Step 2: Convert to fraction form
    140,539.20/210,808.80 = 70,555.20/x
  3. Step 3: Cross multiply
    140,539.20x = 210,808.80 × 70,555.20
  4. Step 4: Simplify right side
    140,539.20x = 14,873,657,045.76
  5. Step 5: Solve for x
    x = 14,873,657,045.76/140,539.20
  6. Step 6: Final answer
    x = 105,832.80

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.