Home / 115,307.05-172,886.04-45,193.45

Finding the Fourth Proportional to 115,307.05, 172,886.04 and 45,193.45

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Solution

The fourth proportional to 115,307.05, 172,886.04 and 45,193.45 is: 67,760.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,307.05 : 172,886.04 = 45,193.45 : x
  2. Step 2: Convert to fraction form
    115,307.05/172,886.04 = 45,193.45/x
  3. Step 3: Cross multiply
    115,307.05x = 172,886.04 × 45,193.45
  4. Step 4: Simplify right side
    115,307.05x = 7,813,316,604.44
  5. Step 5: Solve for x
    x = 7,813,316,604.44/115,307.05
  6. Step 6: Final answer
    x = 67,760.96

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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.