Home / 160,427.05-221,389.40-87,834.65

Finding the Fourth Proportional to 160,427.05, 221,389.40 and 87,834.65

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Solution

The fourth proportional to 160,427.05, 221,389.40 and 87,834.65 is: 121,211.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,427.05 : 221,389.40 = 87,834.65 : x
  2. Step 2: Convert to fraction form
    160,427.05/221,389.40 = 87,834.65/x
  3. Step 3: Cross multiply
    160,427.05x = 221,389.40 × 87,834.65
  4. Step 4: Simplify right side
    160,427.05x = 19,445,659,911.49
  5. Step 5: Solve for x
    x = 19,445,659,911.49/160,427.05
  6. Step 6: Final answer
    x = 121,211.85

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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.