Home / 127,890.36-176,424.48-90,186.48

Finding the Fourth Proportional to 127,890.36, 176,424.48 and 90,186.48

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Solution

The fourth proportional to 127,890.36, 176,424.48 and 90,186.48 is: 124,412.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,890.36 : 176,424.48 = 90,186.48 : x
  2. Step 2: Convert to fraction form
    127,890.36/176,424.48 = 90,186.48/x
  3. Step 3: Cross multiply
    127,890.36x = 176,424.48 × 90,186.48
  4. Step 4: Simplify right side
    127,890.36x = 15,911,102,837.03
  5. Step 5: Solve for x
    x = 15,911,102,837.03/127,890.36
  6. Step 6: Final answer
    x = 124,412.06

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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.