Home / 154,458.42-213,103.08-86,465.40

Finding the Fourth Proportional to 154,458.42, 213,103.08 and 86,465.40

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Solution

The fourth proportional to 154,458.42, 213,103.08 and 86,465.40 is: 119,294.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,458.42 : 213,103.08 = 86,465.40 : x
  2. Step 2: Convert to fraction form
    154,458.42/213,103.08 = 86,465.40/x
  3. Step 3: Cross multiply
    154,458.42x = 213,103.08 × 86,465.40
  4. Step 4: Simplify right side
    154,458.42x = 18,426,043,053.43
  5. Step 5: Solve for x
    x = 18,426,043,053.43/154,458.42
  6. Step 6: Final answer
    x = 119,294.52

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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.