Home / 86,106.74-118,885.28-77,003.86

Finding the Fourth Proportional to 86,106.74, 118,885.28 and 77,003.86

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Solution

The fourth proportional to 86,106.74, 118,885.28 and 77,003.86 is: 106,317.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,106.74 : 118,885.28 = 77,003.86 : x
  2. Step 2: Convert to fraction form
    86,106.74/118,885.28 = 77,003.86/x
  3. Step 3: Cross multiply
    86,106.74x = 118,885.28 × 77,003.86
  4. Step 4: Simplify right side
    86,106.74x = 9,154,625,457.18
  5. Step 5: Solve for x
    x = 9,154,625,457.18/86,106.74
  6. Step 6: Final answer
    x = 106,317.18

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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.