Home / 118,358.12-163,331.69-64,643.36

Finding the Fourth Proportional to 118,358.12, 163,331.69 and 64,643.36

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Solution

The fourth proportional to 118,358.12, 163,331.69 and 64,643.36 is: 89,206.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,358.12 : 163,331.69 = 64,643.36 : x
  2. Step 2: Convert to fraction form
    118,358.12/163,331.69 = 64,643.36/x
  3. Step 3: Cross multiply
    118,358.12x = 163,331.69 × 64,643.36
  4. Step 4: Simplify right side
    118,358.12x = 10,558,308,402.45
  5. Step 5: Solve for x
    x = 10,558,308,402.45/118,358.12
  6. Step 6: Final answer
    x = 89,206.45

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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.