Home / 128,935.39-177,935.99-70,794.45

Finding the Fourth Proportional to 128,935.39, 177,935.99 and 70,794.45

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Solution

The fourth proportional to 128,935.39, 177,935.99 and 70,794.45 is: 97,699.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,935.39 : 177,935.99 = 70,794.45 : x
  2. Step 2: Convert to fraction form
    128,935.39/177,935.99 = 70,794.45/x
  3. Step 3: Cross multiply
    128,935.39x = 177,935.99 × 70,794.45
  4. Step 4: Simplify right side
    128,935.39x = 12,596,879,303.60
  5. Step 5: Solve for x
    x = 12,596,879,303.60/128,935.39
  6. Step 6: Final answer
    x = 97,699.16

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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.