Home / 154,410.54-213,068.64-86,431.32

Finding the Fourth Proportional to 154,410.54, 213,068.64 and 86,431.32

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Solution

The fourth proportional to 154,410.54, 213,068.64 and 86,431.32 is: 119,265.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,410.54 : 213,068.64 = 86,431.32 : x
  2. Step 2: Convert to fraction form
    154,410.54/213,068.64 = 86,431.32/x
  3. Step 3: Cross multiply
    154,410.54x = 213,068.64 × 86,431.32
  4. Step 4: Simplify right side
    154,410.54x = 18,415,803,805.80
  5. Step 5: Solve for x
    x = 18,415,803,805.80/154,410.54
  6. Step 6: Final answer
    x = 119,265.20

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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.