Home / 128,148.58-192,238.26-53,319.36

Finding the Fourth Proportional to 128,148.58, 192,238.26 and 53,319.36

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Solution

The fourth proportional to 128,148.58, 192,238.26 and 53,319.36 is: 79,985.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,148.58 : 192,238.26 = 53,319.36 : x
  2. Step 2: Convert to fraction form
    128,148.58/192,238.26 = 53,319.36/x
  3. Step 3: Cross multiply
    128,148.58x = 192,238.26 × 53,319.36
  4. Step 4: Simplify right side
    128,148.58x = 10,250,020,990.71
  5. Step 5: Solve for x
    x = 10,250,020,990.71/128,148.58
  6. Step 6: Final answer
    x = 79,985.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.