Home / 154,795.32-213,605.10-85,887

Finding the Fourth Proportional to 154,795.32, 213,605.10 and 85,887

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Solution

The fourth proportional to 154,795.32, 213,605.10 and 85,887 is: 118,517.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,795.32 : 213,605.10 = 85,887 : x
  2. Step 2: Convert to fraction form
    154,795.32/213,605.10 = 85,887/x
  3. Step 3: Cross multiply
    154,795.32x = 213,605.10 × 85,887
  4. Step 4: Simplify right side
    154,795.32x = 18,345,901,223.70
  5. Step 5: Solve for x
    x = 18,345,901,223.70/154,795.32
  6. Step 6: Final answer
    x = 118,517.16

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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.