Home / 105,800.77-145,823.25-100,818.06

Finding the Fourth Proportional to 105,800.77, 145,823.25 and 100,818.06

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Solution

The fourth proportional to 105,800.77, 145,823.25 and 100,818.06 is: 138,955.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,800.77 : 145,823.25 = 100,818.06 : x
  2. Step 2: Convert to fraction form
    105,800.77/145,823.25 = 100,818.06/x
  3. Step 3: Cross multiply
    105,800.77x = 145,823.25 × 100,818.06
  4. Step 4: Simplify right side
    105,800.77x = 14,701,617,167.90
  5. Step 5: Solve for x
    x = 14,701,617,167.90/105,800.77
  6. Step 6: Final answer
    x = 138,955.67

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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.