Home / 127,784.10-176,343.27-70,425.51

Finding the Fourth Proportional to 127,784.10, 176,343.27 and 70,425.51

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Solution

The fourth proportional to 127,784.10, 176,343.27 and 70,425.51 is: 97,187.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,784.10 : 176,343.27 = 70,425.51 : x
  2. Step 2: Convert to fraction form
    127,784.10/176,343.27 = 70,425.51/x
  3. Step 3: Cross multiply
    127,784.10x = 176,343.27 × 70,425.51
  4. Step 4: Simplify right side
    127,784.10x = 12,419,064,372.69
  5. Step 5: Solve for x
    x = 12,419,064,372.69/127,784.10
  6. Step 6: Final answer
    x = 97,187.87

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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.