Home / 142,655.36-196,870.33-78,993.16

Finding the Fourth Proportional to 142,655.36, 196,870.33 and 78,993.16

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Solution

The fourth proportional to 142,655.36, 196,870.33 and 78,993.16 is: 109,013.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,655.36 : 196,870.33 = 78,993.16 : x
  2. Step 2: Convert to fraction form
    142,655.36/196,870.33 = 78,993.16/x
  3. Step 3: Cross multiply
    142,655.36x = 196,870.33 × 78,993.16
  4. Step 4: Simplify right side
    142,655.36x = 15,551,409,083.51
  5. Step 5: Solve for x
    x = 15,551,409,083.51/142,655.36
  6. Step 6: Final answer
    x = 109,013.84

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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.