Home / 103,623.12-143,043.24-70,108.56

Finding the Fourth Proportional to 103,623.12, 143,043.24 and 70,108.56

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Solution

The fourth proportional to 103,623.12, 143,043.24 and 70,108.56 is: 96,779.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,623.12 : 143,043.24 = 70,108.56 : x
  2. Step 2: Convert to fraction form
    103,623.12/143,043.24 = 70,108.56/x
  3. Step 3: Cross multiply
    103,623.12x = 143,043.24 × 70,108.56
  4. Step 4: Simplify right side
    103,623.12x = 10,028,555,574.13
  5. Step 5: Solve for x
    x = 10,028,555,574.13/103,623.12
  6. Step 6: Final answer
    x = 96,779.13

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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.