Home / 128,129.45-176,901.77-114,677.37

Finding the Fourth Proportional to 128,129.45, 176,901.77 and 114,677.37

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Solution

The fourth proportional to 128,129.45, 176,901.77 and 114,677.37 is: 158,329.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,129.45 : 176,901.77 = 114,677.37 : x
  2. Step 2: Convert to fraction form
    128,129.45/176,901.77 = 114,677.37/x
  3. Step 3: Cross multiply
    128,129.45x = 176,901.77 × 114,677.37
  4. Step 4: Simplify right side
    128,129.45x = 20,286,630,018.64
  5. Step 5: Solve for x
    x = 20,286,630,018.64/128,129.45
  6. Step 6: Final answer
    x = 158,329.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.