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Finding the Fourth Proportional to 118,354.24, 163,322.40 and 64,638.40

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Solution

The fourth proportional to 118,354.24, 163,322.40 and 64,638.40 is: 89,197.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,354.24 : 163,322.40 = 64,638.40 : x
  2. Step 2: Convert to fraction form
    118,354.24/163,322.40 = 64,638.40/x
  3. Step 3: Cross multiply
    118,354.24x = 163,322.40 × 64,638.40
  4. Step 4: Simplify right side
    118,354.24x = 10,556,898,620.16
  5. Step 5: Solve for x
    x = 10,556,898,620.16/118,354.24
  6. Step 6: Final answer
    x = 89,197.47

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1.5x scale

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.