Home / 142,139.00-196,150.51-78,477.26

Finding the Fourth Proportional to 142,139.00, 196,150.51 and 78,477.26

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Solution

The fourth proportional to 142,139.00, 196,150.51 and 78,477.26 is: 108,297.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,139.00 : 196,150.51 = 78,477.26 : x
  2. Step 2: Convert to fraction form
    142,139.00/196,150.51 = 78,477.26/x
  3. Step 3: Cross multiply
    142,139.00x = 196,150.51 × 78,477.26
  4. Step 4: Simplify right side
    142,139.00x = 15,393,353,689.75
  5. Step 5: Solve for x
    x = 15,393,353,689.75/142,139.00
  6. Step 6: Final answer
    x = 108,297.89

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1.5x scale

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.