Home / 121,455,324.72-167,434,021.20-86,587,480.80

Finding the Fourth Proportional to 121,455,324.72, 167,434,021.20 and 86,587,480.80

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Solution

The fourth proportional to 121,455,324.72, 167,434,021.20 and 86,587,480.80 is: 119,366,443.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,455,324.72 : 167,434,021.20 = 86,587,480.80 : x
  2. Step 2: Convert to fraction form
    121,455,324.72/167,434,021.20 = 86,587,480.80/x
  3. Step 3: Cross multiply
    121,455,324.72x = 167,434,021.20 × 86,587,480.80
  4. Step 4: Simplify right side
    121,455,324.72x = 14,497,690,095,921,792
  5. Step 5: Solve for x
    x = 14,497,690,095,921,792/121,455,324.72
  6. Step 6: Final answer
    x = 119,366,443.01

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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.