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Finding the Fourth Proportional to 145,611.80, 218,417.70 and 115,868.60

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Solution

The fourth proportional to 145,611.80, 218,417.70 and 115,868.60 is: 173,802.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,611.80 : 218,417.70 = 115,868.60 : x
  2. Step 2: Convert to fraction form
    145,611.80/218,417.70 = 115,868.60/x
  3. Step 3: Cross multiply
    145,611.80x = 218,417.70 × 115,868.60
  4. Step 4: Simplify right side
    145,611.80x = 25,307,753,114.22
  5. Step 5: Solve for x
    x = 25,307,753,114.22/145,611.80
  6. Step 6: Final answer
    x = 173,802.90

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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.