Home / 142,055.36-212,880-104,319.32

Finding the Fourth Proportional to 142,055.36, 212,880 and 104,319.32

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Solution

The fourth proportional to 142,055.36, 212,880 and 104,319.32 is: 156,329.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,055.36 : 212,880 = 104,319.32 : x
  2. Step 2: Convert to fraction form
    142,055.36/212,880 = 104,319.32/x
  3. Step 3: Cross multiply
    142,055.36x = 212,880 × 104,319.32
  4. Step 4: Simplify right side
    142,055.36x = 22,207,496,841.60
  5. Step 5: Solve for x
    x = 22,207,496,841.60/142,055.36
  6. Step 6: Final answer
    x = 156,329.88

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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.