Home / 127,121.55-190,547.01-60,420.79

Finding the Fourth Proportional to 127,121.55, 190,547.01 and 60,420.79

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Solution

The fourth proportional to 127,121.55, 190,547.01 and 60,420.79 is: 90,566.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,121.55 : 190,547.01 = 60,420.79 : x
  2. Step 2: Convert to fraction form
    127,121.55/190,547.01 = 60,420.79/x
  3. Step 3: Cross multiply
    127,121.55x = 190,547.01 × 60,420.79
  4. Step 4: Simplify right side
    127,121.55x = 11,512,999,872.76
  5. Step 5: Solve for x
    x = 11,512,999,872.76/127,121.55
  6. Step 6: Final answer
    x = 90,566.86

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1.5x scale

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.