Home / 118,688.08-163,789.68-64,975.36

Finding the Fourth Proportional to 118,688.08, 163,789.68 and 64,975.36

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Solution

The fourth proportional to 118,688.08, 163,789.68 and 64,975.36 is: 89,666.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,688.08 : 163,789.68 = 64,975.36 : x
  2. Step 2: Convert to fraction form
    118,688.08/163,789.68 = 64,975.36/x
  3. Step 3: Cross multiply
    118,688.08x = 163,789.68 × 64,975.36
  4. Step 4: Simplify right side
    118,688.08x = 10,642,293,422.28
  5. Step 5: Solve for x
    x = 10,642,293,422.28/118,688.08
  6. Step 6: Final answer
    x = 89,666.07

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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.