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Finding the Fourth Proportional to 135,480.61, 186,960.79 and 75,051.07

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Solution

The fourth proportional to 135,480.61, 186,960.79 and 75,051.07 is: 103,569.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,480.61 : 186,960.79 = 75,051.07 : x
  2. Step 2: Convert to fraction form
    135,480.61/186,960.79 = 75,051.07/x
  3. Step 3: Cross multiply
    135,480.61x = 186,960.79 × 75,051.07
  4. Step 4: Simplify right side
    135,480.61x = 14,031,607,337.55
  5. Step 5: Solve for x
    x = 14,031,607,337.55/135,480.61
  6. Step 6: Final answer
    x = 103,569.12

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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.