Home / 105,989.06-158,637.45-77,901.68

Finding the Fourth Proportional to 105,989.06, 158,637.45 and 77,901.68

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Solution

The fourth proportional to 105,989.06, 158,637.45 and 77,901.68 is: 116,598.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,989.06 : 158,637.45 = 77,901.68 : x
  2. Step 2: Convert to fraction form
    105,989.06/158,637.45 = 77,901.68/x
  3. Step 3: Cross multiply
    105,989.06x = 158,637.45 × 77,901.68
  4. Step 4: Simplify right side
    105,989.06x = 12,358,123,865.92
  5. Step 5: Solve for x
    x = 12,358,123,865.92/105,989.06
  6. Step 6: Final answer
    x = 116,598.11

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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.