Home / 127,190.79-175,423.14-112,670.51

Finding the Fourth Proportional to 127,190.79, 175,423.14 and 112,670.51

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Solution

The fourth proportional to 127,190.79, 175,423.14 and 112,670.51 is: 155,396.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,190.79 : 175,423.14 = 112,670.51 : x
  2. Step 2: Convert to fraction form
    127,190.79/175,423.14 = 112,670.51/x
  3. Step 3: Cross multiply
    127,190.79x = 175,423.14 × 112,670.51
  4. Step 4: Simplify right side
    127,190.79x = 19,765,013,772.49
  5. Step 5: Solve for x
    x = 19,765,013,772.49/127,190.79
  6. Step 6: Final answer
    x = 155,396.58

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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.