Home / 128,301.54-177,048.99-70,937.51

Finding the Fourth Proportional to 128,301.54, 177,048.99 and 70,937.51

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Solution

The fourth proportional to 128,301.54, 177,048.99 and 70,937.51 is: 97,889.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,301.54 : 177,048.99 = 70,937.51 : x
  2. Step 2: Convert to fraction form
    128,301.54/177,048.99 = 70,937.51/x
  3. Step 3: Cross multiply
    128,301.54x = 177,048.99 × 70,937.51
  4. Step 4: Simplify right side
    128,301.54x = 12,559,413,613.37
  5. Step 5: Solve for x
    x = 12,559,413,613.37/128,301.54
  6. Step 6: Final answer
    x = 97,889.81

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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.