Home / 118,701.12-163,807.58-64,989.55

Finding the Fourth Proportional to 118,701.12, 163,807.58 and 64,989.55

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Solution

The fourth proportional to 118,701.12, 163,807.58 and 64,989.55 is: 89,685.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,701.12 : 163,807.58 = 64,989.55 : x
  2. Step 2: Convert to fraction form
    118,701.12/163,807.58 = 64,989.55/x
  3. Step 3: Cross multiply
    118,701.12x = 163,807.58 × 64,989.55
  4. Step 4: Simplify right side
    118,701.12x = 10,645,780,910.79
  5. Step 5: Solve for x
    x = 10,645,780,910.79/118,701.12
  6. Step 6: Final answer
    x = 89,685.60

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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.