Home / 118,403.72-163,397.26-64,689.62

Finding the Fourth Proportional to 118,403.72, 163,397.26 and 64,689.62

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Solution

The fourth proportional to 118,403.72, 163,397.26 and 64,689.62 is: 89,271.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,403.72 : 163,397.26 = 64,689.62 : x
  2. Step 2: Convert to fraction form
    118,403.72/163,397.26 = 64,689.62/x
  3. Step 3: Cross multiply
    118,403.72x = 163,397.26 × 64,689.62
  4. Step 4: Simplify right side
    118,403.72x = 10,570,106,658.44
  5. Step 5: Solve for x
    x = 10,570,106,658.44/118,403.72
  6. Step 6: Final answer
    x = 89,271.74

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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.