Home / 143,403.13-197,888.16-79,739.56

Finding the Fourth Proportional to 143,403.13, 197,888.16 and 79,739.56

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Solution

The fourth proportional to 143,403.13, 197,888.16 and 79,739.56 is: 110,036.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,403.13 : 197,888.16 = 79,739.56 : x
  2. Step 2: Convert to fraction form
    143,403.13/197,888.16 = 79,739.56/x
  3. Step 3: Cross multiply
    143,403.13x = 197,888.16 × 79,739.56
  4. Step 4: Simplify right side
    143,403.13x = 15,779,514,807.61
  5. Step 5: Solve for x
    x = 15,779,514,807.61/143,403.13
  6. Step 6: Final answer
    x = 110,036.06

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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.