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Finding the Fourth Proportional to 171,509.66, 257,264.59 and 71,615.40

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Solution

The fourth proportional to 171,509.66, 257,264.59 and 71,615.40 is: 107,423.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,509.66 : 257,264.59 = 71,615.40 : x
  2. Step 2: Convert to fraction form
    171,509.66/257,264.59 = 71,615.40/x
  3. Step 3: Cross multiply
    171,509.66x = 257,264.59 × 71,615.40
  4. Step 4: Simplify right side
    171,509.66x = 18,424,106,518.69
  5. Step 5: Solve for x
    x = 18,424,106,518.69/171,509.66
  6. Step 6: Final answer
    x = 107,423.14

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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.