Home / 101,389.12-139,914.21-56,065.60

Finding the Fourth Proportional to 101,389.12, 139,914.21 and 56,065.60

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Solution

The fourth proportional to 101,389.12, 139,914.21 and 56,065.60 is: 77,368.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,389.12 : 139,914.21 = 56,065.60 : x
  2. Step 2: Convert to fraction form
    101,389.12/139,914.21 = 56,065.60/x
  3. Step 3: Cross multiply
    101,389.12x = 139,914.21 × 56,065.60
  4. Step 4: Simplify right side
    101,389.12x = 7,844,374,132.18
  5. Step 5: Solve for x
    x = 7,844,374,132.18/101,389.12
  6. Step 6: Final answer
    x = 77,368.99

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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.