Home / 78,818.32-117,369.14-77,945.68

Finding the Fourth Proportional to 78,818.32, 117,369.14 and 77,945.68

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Solution

The fourth proportional to 78,818.32, 117,369.14 and 77,945.68 is: 116,069.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,818.32 : 117,369.14 = 77,945.68 : x
  2. Step 2: Convert to fraction form
    78,818.32/117,369.14 = 77,945.68/x
  3. Step 3: Cross multiply
    78,818.32x = 117,369.14 × 77,945.68
  4. Step 4: Simplify right side
    78,818.32x = 9,148,417,428.32
  5. Step 5: Solve for x
    x = 9,148,417,428.32/78,818.32
  6. Step 6: Final answer
    x = 116,069.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.