Home / 142,448.26-213,577.48-78,436.55

Finding the Fourth Proportional to 142,448.26, 213,577.48 and 78,436.55

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Solution

The fourth proportional to 142,448.26, 213,577.48 and 78,436.55 is: 117,602.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,448.26 : 213,577.48 = 78,436.55 : x
  2. Step 2: Convert to fraction form
    142,448.26/213,577.48 = 78,436.55/x
  3. Step 3: Cross multiply
    142,448.26x = 213,577.48 × 78,436.55
  4. Step 4: Simplify right side
    142,448.26x = 16,752,280,830.65
  5. Step 5: Solve for x
    x = 16,752,280,830.65/142,448.26
  6. Step 6: Final answer
    x = 117,602.57

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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.