Home / 128,165.18-175,583.37-123,373.35

Finding the Fourth Proportional to 128,165.18, 175,583.37 and 123,373.35

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Solution

The fourth proportional to 128,165.18, 175,583.37 and 123,373.35 is: 169,018.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,165.18 : 175,583.37 = 123,373.35 : x
  2. Step 2: Convert to fraction form
    128,165.18/175,583.37 = 123,373.35/x
  3. Step 3: Cross multiply
    128,165.18x = 175,583.37 × 123,373.35
  4. Step 4: Simplify right side
    128,165.18x = 21,662,308,561.19
  5. Step 5: Solve for x
    x = 21,662,308,561.19/128,165.18
  6. Step 6: Final answer
    x = 169,018.67

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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.