Home / 118,358.21-163,331.81-64,643.45

Finding the Fourth Proportional to 118,358.21, 163,331.81 and 64,643.45

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Solution

The fourth proportional to 118,358.21, 163,331.81 and 64,643.45 is: 89,206.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,358.21 : 163,331.81 = 64,643.45 : x
  2. Step 2: Convert to fraction form
    118,358.21/163,331.81 = 64,643.45/x
  3. Step 3: Cross multiply
    118,358.21x = 163,331.81 × 64,643.45
  4. Step 4: Simplify right side
    118,358.21x = 10,558,331,714.42
  5. Step 5: Solve for x
    x = 10,558,331,714.42/118,358.21
  6. Step 6: Final answer
    x = 89,206.58

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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.