Home / 157,106.21-216,810.27-89,127.77

Finding the Fourth Proportional to 157,106.21, 216,810.27 and 89,127.77

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Solution

The fourth proportional to 157,106.21, 216,810.27 and 89,127.77 is: 122,998.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,106.21 : 216,810.27 = 89,127.77 : x
  2. Step 2: Convert to fraction form
    157,106.21/216,810.27 = 89,127.77/x
  3. Step 3: Cross multiply
    157,106.21x = 216,810.27 × 89,127.77
  4. Step 4: Simplify right side
    157,106.21x = 19,323,814,794.15
  5. Step 5: Solve for x
    x = 19,323,814,794.15/157,106.21
  6. Step 6: Final answer
    x = 122,998.42

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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.