Home / 103,922.51-143,337.33-79,448.63

Finding the Fourth Proportional to 103,922.51, 143,337.33 and 79,448.63

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Solution

The fourth proportional to 103,922.51, 143,337.33 and 79,448.63 is: 109,581.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,922.51 : 143,337.33 = 79,448.63 : x
  2. Step 2: Convert to fraction form
    103,922.51/143,337.33 = 79,448.63/x
  3. Step 3: Cross multiply
    103,922.51x = 143,337.33 × 79,448.63
  4. Step 4: Simplify right side
    103,922.51x = 11,387,953,779.67
  5. Step 5: Solve for x
    x = 11,387,953,779.67/103,922.51
  6. Step 6: Final answer
    x = 109,581.21

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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.