Home / 118,405.62-163,396.98-64,690.74

Finding the Fourth Proportional to 118,405.62, 163,396.98 and 64,690.74

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Solution

The fourth proportional to 118,405.62, 163,396.98 and 64,690.74 is: 89,271.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,405.62 : 163,396.98 = 64,690.74 : x
  2. Step 2: Convert to fraction form
    118,405.62/163,396.98 = 64,690.74/x
  3. Step 3: Cross multiply
    118,405.62x = 163,396.98 × 64,690.74
  4. Step 4: Simplify right side
    118,405.62x = 10,570,271,549.97
  5. Step 5: Solve for x
    x = 10,570,271,549.97/118,405.62
  6. Step 6: Final answer
    x = 89,271.70

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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.