Home / 103,908.09-143,393.13-56,161.44

Finding the Fourth Proportional to 103,908.09, 143,393.13 and 56,161.44

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Solution

The fourth proportional to 103,908.09, 143,393.13 and 56,161.44 is: 77,502.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,908.09 : 143,393.13 = 56,161.44 : x
  2. Step 2: Convert to fraction form
    103,908.09/143,393.13 = 56,161.44/x
  3. Step 3: Cross multiply
    103,908.09x = 143,393.13 × 56,161.44
  4. Step 4: Simplify right side
    103,908.09x = 8,053,164,666.91
  5. Step 5: Solve for x
    x = 8,053,164,666.91/103,908.09
  6. Step 6: Final answer
    x = 77,502.77

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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.