Home / 142,142.01-196,154.65-78,480.26

Finding the Fourth Proportional to 142,142.01, 196,154.65 and 78,480.26

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Solution

The fourth proportional to 142,142.01, 196,154.65 and 78,480.26 is: 108,302.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,142.01 : 196,154.65 = 78,480.26 : x
  2. Step 2: Convert to fraction form
    142,142.01/196,154.65 = 78,480.26/x
  3. Step 3: Cross multiply
    142,142.01x = 196,154.65 × 78,480.26
  4. Step 4: Simplify right side
    142,142.01x = 15,394,267,932.21
  5. Step 5: Solve for x
    x = 15,394,267,932.21/142,142.01
  6. Step 6: Final answer
    x = 108,302.03

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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.