Home / 115,503.21-159,392.70-64,516.77

Finding the Fourth Proportional to 115,503.21, 159,392.70 and 64,516.77

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Solution

The fourth proportional to 115,503.21, 159,392.70 and 64,516.77 is: 89,032.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,503.21 : 159,392.70 = 64,516.77 : x
  2. Step 2: Convert to fraction form
    115,503.21/159,392.70 = 64,516.77/x
  3. Step 3: Cross multiply
    115,503.21x = 159,392.70 × 64,516.77
  4. Step 4: Simplify right side
    115,503.21x = 10,283,502,165.58
  5. Step 5: Solve for x
    x = 10,283,502,165.58/115,503.21
  6. Step 6: Final answer
    x = 89,032.18

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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.