Home / 154,484.64-213,187.80-86,501.40

Finding the Fourth Proportional to 154,484.64, 213,187.80 and 86,501.40

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Solution

The fourth proportional to 154,484.64, 213,187.80 and 86,501.40 is: 119,371.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,484.64 : 213,187.80 = 86,501.40 : x
  2. Step 2: Convert to fraction form
    154,484.64/213,187.80 = 86,501.40/x
  3. Step 3: Cross multiply
    154,484.64x = 213,187.80 × 86,501.40
  4. Step 4: Simplify right side
    154,484.64x = 18,441,043,162.92
  5. Step 5: Solve for x
    x = 18,441,043,162.92/154,484.64
  6. Step 6: Final answer
    x = 119,371.37

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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.