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Finding the Fourth Proportional to 139,959.53, 209,939.28 and 46,465.28

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Solution

The fourth proportional to 139,959.53, 209,939.28 and 46,465.28 is: 69,697.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,959.53 : 209,939.28 = 46,465.28 : x
  2. Step 2: Convert to fraction form
    139,959.53/209,939.28 = 46,465.28/x
  3. Step 3: Cross multiply
    139,959.53x = 209,939.28 × 46,465.28
  4. Step 4: Simplify right side
    139,959.53x = 9,754,886,378.50
  5. Step 5: Solve for x
    x = 9,754,886,378.50/139,959.53
  6. Step 6: Final answer
    x = 69,697.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.