Home / 142,296.08-196,362.20-78,632.50

Finding the Fourth Proportional to 142,296.08, 196,362.20 and 78,632.50

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Solution

The fourth proportional to 142,296.08, 196,362.20 and 78,632.50 is: 108,509.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,296.08 : 196,362.20 = 78,632.50 : x
  2. Step 2: Convert to fraction form
    142,296.08/196,362.20 = 78,632.50/x
  3. Step 3: Cross multiply
    142,296.08x = 196,362.20 × 78,632.50
  4. Step 4: Simplify right side
    142,296.08x = 15,440,450,691.50
  5. Step 5: Solve for x
    x = 15,440,450,691.50/142,296.08
  6. Step 6: Final answer
    x = 108,509.32

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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.