Home / 103,816.40-143,266.64-56,069.76

Finding the Fourth Proportional to 103,816.40, 143,266.64 and 56,069.76

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Solution

The fourth proportional to 103,816.40, 143,266.64 and 56,069.76 is: 77,376.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,816.40 : 143,266.64 = 56,069.76 : x
  2. Step 2: Convert to fraction form
    103,816.40/143,266.64 = 56,069.76/x
  3. Step 3: Cross multiply
    103,816.40x = 143,266.64 × 56,069.76
  4. Step 4: Simplify right side
    103,816.40x = 8,032,926,120.81
  5. Step 5: Solve for x
    x = 8,032,926,120.81/103,816.40
  6. Step 6: Final answer
    x = 77,376.27

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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.