Home / 118,428.95-163,429.99-64,712.81

Finding the Fourth Proportional to 118,428.95, 163,429.99 and 64,712.81

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Solution

The fourth proportional to 118,428.95, 163,429.99 and 64,712.81 is: 89,302.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,428.95 : 163,429.99 = 64,712.81 : x
  2. Step 2: Convert to fraction form
    118,428.95/163,429.99 = 64,712.81/x
  3. Step 3: Cross multiply
    118,428.95x = 163,429.99 × 64,712.81
  4. Step 4: Simplify right side
    118,428.95x = 10,576,014,137.96
  5. Step 5: Solve for x
    x = 10,576,014,137.96/118,428.95
  6. Step 6: Final answer
    x = 89,302.61

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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.