Home / 160,270.74-221,175.12-87,672.21

Finding the Fourth Proportional to 160,270.74, 221,175.12 and 87,672.21

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Solution

The fourth proportional to 160,270.74, 221,175.12 and 87,672.21 is: 120,988.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,270.74 : 221,175.12 = 87,672.21 : x
  2. Step 2: Convert to fraction form
    160,270.74/221,175.12 = 87,672.21/x
  3. Step 3: Cross multiply
    160,270.74x = 221,175.12 × 87,672.21
  4. Step 4: Simplify right side
    160,270.74x = 19,390,911,567.42
  5. Step 5: Solve for x
    x = 19,390,911,567.42/160,270.74
  6. Step 6: Final answer
    x = 120,988.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.