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Finding the Fourth Proportional to 115,809.77, 158,358.15 and 115,809.77

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Solution

The fourth proportional to 115,809.77, 158,358.15 and 115,809.77 is: 158,358.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,809.77 : 158,358.15 = 115,809.77 : x
  2. Step 2: Convert to fraction form
    115,809.77/158,358.15 = 115,809.77/x
  3. Step 3: Cross multiply
    115,809.77x = 158,358.15 × 115,809.77
  4. Step 4: Simplify right side
    115,809.77x = 18,339,421,325.02
  5. Step 5: Solve for x
    x = 18,339,421,325.02/115,809.77
  6. Step 6: Final answer
    x = 158,358.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.