Home / 128,186.93-176,901.53-70,829.95

Finding the Fourth Proportional to 128,186.93, 176,901.53 and 70,829.95

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Solution

The fourth proportional to 128,186.93, 176,901.53 and 70,829.95 is: 97,747.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,186.93 : 176,901.53 = 70,829.95 : x
  2. Step 2: Convert to fraction form
    128,186.93/176,901.53 = 70,829.95/x
  3. Step 3: Cross multiply
    128,186.93x = 176,901.53 × 70,829.95
  4. Step 4: Simplify right side
    128,186.93x = 12,529,926,524.82
  5. Step 5: Solve for x
    x = 12,529,926,524.82/128,186.93
  6. Step 6: Final answer
    x = 97,747.30

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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.