Home / 139,897.76-193,054.02-76,234.28

Finding the Fourth Proportional to 139,897.76, 193,054.02 and 76,234.28

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Solution

The fourth proportional to 139,897.76, 193,054.02 and 76,234.28 is: 105,200.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,897.76 : 193,054.02 = 76,234.28 : x
  2. Step 2: Convert to fraction form
    139,897.76/193,054.02 = 76,234.28/x
  3. Step 3: Cross multiply
    139,897.76x = 193,054.02 × 76,234.28
  4. Step 4: Simplify right side
    139,897.76x = 14,717,334,215.81
  5. Step 5: Solve for x
    x = 14,717,334,215.81/139,897.76
  6. Step 6: Final answer
    x = 105,200.64

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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.