Home / 128,926.68-193,389.24-70,135.98

Finding the Fourth Proportional to 128,926.68, 193,389.24 and 70,135.98

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Solution

The fourth proportional to 128,926.68, 193,389.24 and 70,135.98 is: 105,203.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,926.68 : 193,389.24 = 70,135.98 : x
  2. Step 2: Convert to fraction form
    128,926.68/193,389.24 = 70,135.98/x
  3. Step 3: Cross multiply
    128,926.68x = 193,389.24 × 70,135.98
  4. Step 4: Simplify right side
    128,926.68x = 13,563,543,868.86
  5. Step 5: Solve for x
    x = 13,563,543,868.86/128,926.68
  6. Step 6: Final answer
    x = 105,203.55

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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.