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Finding the Fourth Proportional to 139,484.40, 209,270.32 and 46,055.76

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Solution

The fourth proportional to 139,484.40, 209,270.32 and 46,055.76 is: 69,098.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,484.40 : 209,270.32 = 46,055.76 : x
  2. Step 2: Convert to fraction form
    139,484.40/209,270.32 = 46,055.76/x
  3. Step 3: Cross multiply
    139,484.40x = 209,270.32 × 46,055.76
  4. Step 4: Simplify right side
    139,484.40x = 9,638,103,633.04
  5. Step 5: Solve for x
    x = 9,638,103,633.04/139,484.40
  6. Step 6: Final answer
    x = 69,098.08

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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.