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Finding the Fourth Proportional to 171,402.80, 257,104.20 and 127,225.40

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Solution

The fourth proportional to 171,402.80, 257,104.20 and 127,225.40 is: 190,838.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,402.80 : 257,104.20 = 127,225.40 : x
  2. Step 2: Convert to fraction form
    171,402.80/257,104.20 = 127,225.40/x
  3. Step 3: Cross multiply
    171,402.80x = 257,104.20 × 127,225.40
  4. Step 4: Simplify right side
    171,402.80x = 32,710,184,686.68
  5. Step 5: Solve for x
    x = 32,710,184,686.68/171,402.80
  6. Step 6: Final answer
    x = 190,838.10

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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.