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Finding the Fourth Proportional to 101,317.98, 139,809.12 and 55,988.64

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Solution

The fourth proportional to 101,317.98, 139,809.12 and 55,988.64 is: 77,258.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,317.98 : 139,809.12 = 55,988.64 : x
  2. Step 2: Convert to fraction form
    101,317.98/139,809.12 = 55,988.64/x
  3. Step 3: Cross multiply
    101,317.98x = 139,809.12 × 55,988.64
  4. Step 4: Simplify right side
    101,317.98x = 7,827,722,488.40
  5. Step 5: Solve for x
    x = 7,827,722,488.40/101,317.98
  6. Step 6: Final answer
    x = 77,258.97

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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.