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Finding the Fourth Proportional to 136,394.79, 188,225.03 and 79,045.13

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Solution

The fourth proportional to 136,394.79, 188,225.03 and 79,045.13 is: 109,082.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,394.79 : 188,225.03 = 79,045.13 : x
  2. Step 2: Convert to fraction form
    136,394.79/188,225.03 = 79,045.13/x
  3. Step 3: Cross multiply
    136,394.79x = 188,225.03 × 79,045.13
  4. Step 4: Simplify right side
    136,394.79x = 14,878,270,629.25
  5. Step 5: Solve for x
    x = 14,878,270,629.25/136,394.79
  6. Step 6: Final answer
    x = 109,082.40

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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.