Home / 118,711.66-163,815.86-64,986.40

Finding the Fourth Proportional to 118,711.66, 163,815.86 and 64,986.40

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Solution

The fourth proportional to 118,711.66, 163,815.86 and 64,986.40 is: 89,677.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,711.66 : 163,815.86 = 64,986.40 : x
  2. Step 2: Convert to fraction form
    118,711.66/163,815.86 = 64,986.40/x
  3. Step 3: Cross multiply
    118,711.66x = 163,815.86 × 64,986.40
  4. Step 4: Simplify right side
    118,711.66x = 10,645,803,004.30
  5. Step 5: Solve for x
    x = 10,645,803,004.30/118,711.66
  6. Step 6: Final answer
    x = 89,677.82

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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.