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Finding the Fourth Proportional to 103,807.88, 143,254.87 and 56,061.22

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Solution

The fourth proportional to 103,807.88, 143,254.87 and 56,061.22 is: 77,364.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,807.88 : 143,254.87 = 56,061.22 : x
  2. Step 2: Convert to fraction form
    103,807.88/143,254.87 = 56,061.22/x
  3. Step 3: Cross multiply
    103,807.88x = 143,254.87 × 56,061.22
  4. Step 4: Simplify right side
    103,807.88x = 8,031,042,783.14
  5. Step 5: Solve for x
    x = 8,031,042,783.14/103,807.88
  6. Step 6: Final answer
    x = 77,364.48

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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.