Home / 142,055.56-213,028-53,260.64

Finding the Fourth Proportional to 142,055.56, 213,028 and 53,260.64

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Solution

The fourth proportional to 142,055.56, 213,028 and 53,260.64 is: 79,870.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,055.56 : 213,028 = 53,260.64 : x
  2. Step 2: Convert to fraction form
    142,055.56/213,028 = 53,260.64/x
  3. Step 3: Cross multiply
    142,055.56x = 213,028 × 53,260.64
  4. Step 4: Simplify right side
    142,055.56x = 11,346,007,617.92
  5. Step 5: Solve for x
    x = 11,346,007,617.92/142,055.56
  6. Step 6: Final answer
    x = 79,870.21

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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.