Home / 103,808.15-143,255.25-56,061.51

Finding the Fourth Proportional to 103,808.15, 143,255.25 and 56,061.51

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Solution

The fourth proportional to 103,808.15, 143,255.25 and 56,061.51 is: 77,364.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,808.15 : 143,255.25 = 56,061.51 : x
  2. Step 2: Convert to fraction form
    103,808.15/143,255.25 = 56,061.51/x
  3. Step 3: Cross multiply
    103,808.15x = 143,255.25 × 56,061.51
  4. Step 4: Simplify right side
    103,808.15x = 8,031,105,630.43
  5. Step 5: Solve for x
    x = 8,031,105,630.43/103,808.15
  6. Step 6: Final answer
    x = 77,364.89

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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.