Home / 142,050.24-196,027.62-78,386.64

Finding the Fourth Proportional to 142,050.24, 196,027.62 and 78,386.64

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Solution

The fourth proportional to 142,050.24, 196,027.62 and 78,386.64 is: 108,172.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,050.24 : 196,027.62 = 78,386.64 : x
  2. Step 2: Convert to fraction form
    142,050.24/196,027.62 = 78,386.64/x
  3. Step 3: Cross multiply
    142,050.24x = 196,027.62 × 78,386.64
  4. Step 4: Simplify right side
    142,050.24x = 15,365,946,479.00
  5. Step 5: Solve for x
    x = 15,365,946,479.00/142,050.24
  6. Step 6: Final answer
    x = 108,172.62

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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.