Home / 103,908.10-143,392.72-56,161.34

Finding the Fourth Proportional to 103,908.10, 143,392.72 and 56,161.34

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Solution

The fourth proportional to 103,908.10, 143,392.72 and 56,161.34 is: 77,502.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,908.10 : 143,392.72 = 56,161.34 : x
  2. Step 2: Convert to fraction form
    103,908.10/143,392.72 = 56,161.34/x
  3. Step 3: Cross multiply
    103,908.10x = 143,392.72 × 56,161.34
  4. Step 4: Simplify right side
    103,908.10x = 8,053,127,301.44
  5. Step 5: Solve for x
    x = 8,053,127,301.44/103,908.10
  6. Step 6: Final answer
    x = 77,502.40

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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.