Home / 142,036.86-213,136.70-57,781.47

Finding the Fourth Proportional to 142,036.86, 213,136.70 and 57,781.47

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Solution

The fourth proportional to 142,036.86, 213,136.70 and 57,781.47 is: 86,705.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,036.86 : 213,136.70 = 57,781.47 : x
  2. Step 2: Convert to fraction form
    142,036.86/213,136.70 = 57,781.47/x
  3. Step 3: Cross multiply
    142,036.86x = 213,136.70 × 57,781.47
  4. Step 4: Simplify right side
    142,036.86x = 12,315,351,548.04
  5. Step 5: Solve for x
    x = 12,315,351,548.04/142,036.86
  6. Step 6: Final answer
    x = 86,705.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.