Home / 118,685.12-163,785.45-64,970.17

Finding the Fourth Proportional to 118,685.12, 163,785.45 and 64,970.17

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Solution

The fourth proportional to 118,685.12, 163,785.45 and 64,970.17 is: 89,658.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,685.12 : 163,785.45 = 64,970.17 : x
  2. Step 2: Convert to fraction form
    118,685.12/163,785.45 = 64,970.17/x
  3. Step 3: Cross multiply
    118,685.12x = 163,785.45 × 64,970.17
  4. Step 4: Simplify right side
    118,685.12x = 10,641,168,530.03
  5. Step 5: Solve for x
    x = 10,641,168,530.03/118,685.12
  6. Step 6: Final answer
    x = 89,658.83

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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.