Home / 127,128.56-190,723.67-38,376.76

Finding the Fourth Proportional to 127,128.56, 190,723.67 and 38,376.76

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Solution

The fourth proportional to 127,128.56, 190,723.67 and 38,376.76 is: 57,574.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,128.56 : 190,723.67 = 38,376.76 : x
  2. Step 2: Convert to fraction form
    127,128.56/190,723.67 = 38,376.76/x
  3. Step 3: Cross multiply
    127,128.56x = 190,723.67 × 38,376.76
  4. Step 4: Simplify right side
    127,128.56x = 7,319,356,509.91
  5. Step 5: Solve for x
    x = 7,319,356,509.91/127,128.56
  6. Step 6: Final answer
    x = 57,574.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.