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Finding the Fourth Proportional to 124,420.65, 186,630.83 and 30,926.40

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Solution

The fourth proportional to 124,420.65, 186,630.83 and 30,926.40 is: 46,389.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,420.65 : 186,630.83 = 30,926.40 : x
  2. Step 2: Convert to fraction form
    124,420.65/186,630.83 = 30,926.40/x
  3. Step 3: Cross multiply
    124,420.65x = 186,630.83 × 30,926.40
  4. Step 4: Simplify right side
    124,420.65x = 5,771,819,700.91
  5. Step 5: Solve for x
    x = 5,771,819,700.91/124,420.65
  6. Step 6: Final answer
    x = 46,389.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.