Home / 142,292.56-196,363.80-78,630.36

Finding the Fourth Proportional to 142,292.56, 196,363.80 and 78,630.36

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Solution

The fourth proportional to 142,292.56, 196,363.80 and 78,630.36 is: 108,509.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,292.56 : 196,363.80 = 78,630.36 : x
  2. Step 2: Convert to fraction form
    142,292.56/196,363.80 = 78,630.36/x
  3. Step 3: Cross multiply
    142,292.56x = 196,363.80 × 78,630.36
  4. Step 4: Simplify right side
    142,292.56x = 15,440,156,284.97
  5. Step 5: Solve for x
    x = 15,440,156,284.97/142,292.56
  6. Step 6: Final answer
    x = 108,509.93

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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.