Home / 142,065.63-196,044.84-78,402.60

Finding the Fourth Proportional to 142,065.63, 196,044.84 and 78,402.60

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Solution

The fourth proportional to 142,065.63, 196,044.84 and 78,402.60 is: 108,192.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,065.63 : 196,044.84 = 78,402.60 : x
  2. Step 2: Convert to fraction form
    142,065.63/196,044.84 = 78,402.60/x
  3. Step 3: Cross multiply
    142,065.63x = 196,044.84 × 78,402.60
  4. Step 4: Simplify right side
    142,065.63x = 15,370,425,172.58
  5. Step 5: Solve for x
    x = 15,370,425,172.58/142,065.63
  6. Step 6: Final answer
    x = 108,192.43

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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.