Home / 145,611.14-218,416.55-45,780.06

Finding the Fourth Proportional to 145,611.14, 218,416.55 and 45,780.06

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Solution

The fourth proportional to 145,611.14, 218,416.55 and 45,780.06 is: 68,670.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,611.14 : 218,416.55 = 45,780.06 : x
  2. Step 2: Convert to fraction form
    145,611.14/218,416.55 = 45,780.06/x
  3. Step 3: Cross multiply
    145,611.14x = 218,416.55 × 45,780.06
  4. Step 4: Simplify right side
    145,611.14x = 9,999,122,763.99
  5. Step 5: Solve for x
    x = 9,999,122,763.99/145,611.14
  6. Step 6: Final answer
    x = 68,670.04

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1.5x scale

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.