Home / 77,983.80-116,975.70-69,673.20

Finding the Fourth Proportional to 77,983.80, 116,975.70 and 69,673.20

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Solution

The fourth proportional to 77,983.80, 116,975.70 and 69,673.20 is: 104,509.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,983.80 : 116,975.70 = 69,673.20 : x
  2. Step 2: Convert to fraction form
    77,983.80/116,975.70 = 69,673.20/x
  3. Step 3: Cross multiply
    77,983.80x = 116,975.70 × 69,673.20
  4. Step 4: Simplify right side
    77,983.80x = 8,150,071,341.24
  5. Step 5: Solve for x
    x = 8,150,071,341.24/77,983.80
  6. Step 6: Final answer
    x = 104,509.80

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1.5x scale

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.