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Finding the Fourth Proportional to 145,969.87, 201,139.53 and 107,668.74

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Solution

The fourth proportional to 145,969.87, 201,139.53 and 107,668.74 is: 148,362.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,969.87 : 201,139.53 = 107,668.74 : x
  2. Step 2: Convert to fraction form
    145,969.87/201,139.53 = 107,668.74/x
  3. Step 3: Cross multiply
    145,969.87x = 201,139.53 × 107,668.74
  4. Step 4: Simplify right side
    145,969.87x = 21,656,440,412.63
  5. Step 5: Solve for x
    x = 21,656,440,412.63/145,969.87
  6. Step 6: Final answer
    x = 148,362.40

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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.