Home / 103,045.68-142,199.12-57,721.46

Finding the Fourth Proportional to 103,045.68, 142,199.12 and 57,721.46

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Solution

The fourth proportional to 103,045.68, 142,199.12 and 57,721.46 is: 79,653.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,045.68 : 142,199.12 = 57,721.46 : x
  2. Step 2: Convert to fraction form
    103,045.68/142,199.12 = 57,721.46/x
  3. Step 3: Cross multiply
    103,045.68x = 142,199.12 × 57,721.46
  4. Step 4: Simplify right side
    103,045.68x = 8,207,939,817.51
  5. Step 5: Solve for x
    x = 8,207,939,817.51/103,045.68
  6. Step 6: Final answer
    x = 79,653.41

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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.