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Finding the Fourth Proportional to 101,175, 139,621.58 and 56,463

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Solution

The fourth proportional to 101,175, 139,621.58 and 56,463 is: 77,918.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,175 : 139,621.58 = 56,463 : x
  2. Step 2: Convert to fraction form
    101,175/139,621.58 = 56,463/x
  3. Step 3: Cross multiply
    101,175x = 139,621.58 × 56,463
  4. Step 4: Simplify right side
    101,175x = 7,883,453,271.54
  5. Step 5: Solve for x
    x = 7,883,453,271.54/101,175
  6. Step 6: Final answer
    x = 77,918.98

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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.