Home / 145,891.80-218,934.90-66,965.40

Finding the Fourth Proportional to 145,891.80, 218,934.90 and 66,965.40

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Solution

The fourth proportional to 145,891.80, 218,934.90 and 66,965.40 is: 100,492.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,891.80 : 218,934.90 = 66,965.40 : x
  2. Step 2: Convert to fraction form
    145,891.80/218,934.90 = 66,965.40/x
  3. Step 3: Cross multiply
    145,891.80x = 218,934.90 × 66,965.40
  4. Step 4: Simplify right side
    145,891.80x = 14,661,063,152.46
  5. Step 5: Solve for x
    x = 14,661,063,152.46/145,891.80
  6. Step 6: Final answer
    x = 100,492.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.