Home / 128,301.45-177,052.86-70,939.26

Finding the Fourth Proportional to 128,301.45, 177,052.86 and 70,939.26

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Solution

The fourth proportional to 128,301.45, 177,052.86 and 70,939.26 is: 97,894.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,301.45 : 177,052.86 = 70,939.26 : x
  2. Step 2: Convert to fraction form
    128,301.45/177,052.86 = 70,939.26/x
  3. Step 3: Cross multiply
    128,301.45x = 177,052.86 × 70,939.26
  4. Step 4: Simplify right side
    128,301.45x = 12,559,999,489.26
  5. Step 5: Solve for x
    x = 12,559,999,489.26/128,301.45
  6. Step 6: Final answer
    x = 97,894.45

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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.