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Finding the Fourth Proportional to 103,309.59, 142,526.07 and 63,020.19

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Solution

The fourth proportional to 103,309.59, 142,526.07 and 63,020.19 is: 86,942.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,309.59 : 142,526.07 = 63,020.19 : x
  2. Step 2: Convert to fraction form
    103,309.59/142,526.07 = 63,020.19/x
  3. Step 3: Cross multiply
    103,309.59x = 142,526.07 × 63,020.19
  4. Step 4: Simplify right side
    103,309.59x = 8,982,020,011.35
  5. Step 5: Solve for x
    x = 8,982,020,011.35/103,309.59
  6. Step 6: Final answer
    x = 86,942.75

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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.