Home / 154,654.59-213,438.32-86,683.11

Finding the Fourth Proportional to 154,654.59, 213,438.32 and 86,683.11

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Solution

The fourth proportional to 154,654.59, 213,438.32 and 86,683.11 is: 119,631.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,654.59 : 213,438.32 = 86,683.11 : x
  2. Step 2: Convert to fraction form
    154,654.59/213,438.32 = 86,683.11/x
  3. Step 3: Cross multiply
    154,654.59x = 213,438.32 × 86,683.11
  4. Step 4: Simplify right side
    154,654.59x = 18,501,496,937.36
  5. Step 5: Solve for x
    x = 18,501,496,937.36/154,654.59
  6. Step 6: Final answer
    x = 119,631.09

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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.