Home / 101,427.03-139,968.54-56,715.03

Finding the Fourth Proportional to 101,427.03, 139,968.54 and 56,715.03

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Solution

The fourth proportional to 101,427.03, 139,968.54 and 56,715.03 is: 78,266.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,427.03 : 139,968.54 = 56,715.03 : x
  2. Step 2: Convert to fraction form
    101,427.03/139,968.54 = 56,715.03/x
  3. Step 3: Cross multiply
    101,427.03x = 139,968.54 × 56,715.03
  4. Step 4: Simplify right side
    101,427.03x = 7,938,319,945.16
  5. Step 5: Solve for x
    x = 7,938,319,945.16/101,427.03
  6. Step 6: Final answer
    x = 78,266.32

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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.