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Finding the Fourth Proportional to 101,146.44, 139,582 and 56,434.44

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Solution

The fourth proportional to 101,146.44, 139,582 and 56,434.44 is: 77,879.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,146.44 : 139,582 = 56,434.44 : x
  2. Step 2: Convert to fraction form
    101,146.44/139,582 = 56,434.44/x
  3. Step 3: Cross multiply
    101,146.44x = 139,582 × 56,434.44
  4. Step 4: Simplify right side
    101,146.44x = 7,877,232,004.08
  5. Step 5: Solve for x
    x = 7,877,232,004.08/101,146.44
  6. Step 6: Final answer
    x = 77,879.48

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1.5x scale

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.