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Finding the Fourth Proportional to 101,067.86, 139,368.13 and 70,476.51

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Solution

The fourth proportional to 101,067.86, 139,368.13 and 70,476.51 is: 97,184.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,067.86 : 139,368.13 = 70,476.51 : x
  2. Step 2: Convert to fraction form
    101,067.86/139,368.13 = 70,476.51/x
  3. Step 3: Cross multiply
    101,067.86x = 139,368.13 × 70,476.51
  4. Step 4: Simplify right side
    101,067.86x = 9,822,179,754.07
  5. Step 5: Solve for x
    x = 9,822,179,754.07/101,067.86
  6. Step 6: Final answer
    x = 97,184.01

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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.