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Finding the Fourth Proportional to 145,633.80, 218,450.70 and 124,638.60

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Solution

The fourth proportional to 145,633.80, 218,450.70 and 124,638.60 is: 186,957.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,633.80 : 218,450.70 = 124,638.60 : x
  2. Step 2: Convert to fraction form
    145,633.80/218,450.70 = 124,638.60/x
  3. Step 3: Cross multiply
    145,633.80x = 218,450.70 × 124,638.60
  4. Step 4: Simplify right side
    145,633.80x = 27,227,389,417.02
  5. Step 5: Solve for x
    x = 27,227,389,417.02/145,633.80
  6. Step 6: Final answer
    x = 186,957.90

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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.