Home / 143,645.04-215,506.44-77,072.76

Finding the Fourth Proportional to 143,645.04, 215,506.44 and 77,072.76

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Solution

The fourth proportional to 143,645.04, 215,506.44 and 77,072.76 is: 115,630.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,645.04 : 215,506.44 = 77,072.76 : x
  2. Step 2: Convert to fraction form
    143,645.04/215,506.44 = 77,072.76/x
  3. Step 3: Cross multiply
    143,645.04x = 215,506.44 × 77,072.76
  4. Step 4: Simplify right side
    143,645.04x = 16,609,676,128.57
  5. Step 5: Solve for x
    x = 16,609,676,128.57/143,645.04
  6. Step 6: Final answer
    x = 115,630.00

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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.