Home / 136,913.84-188,934.35-76,472.45

Finding the Fourth Proportional to 136,913.84, 188,934.35 and 76,472.45

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Solution

The fourth proportional to 136,913.84, 188,934.35 and 76,472.45 is: 105,528.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,913.84 : 188,934.35 = 76,472.45 : x
  2. Step 2: Convert to fraction form
    136,913.84/188,934.35 = 76,472.45/x
  3. Step 3: Cross multiply
    136,913.84x = 188,934.35 × 76,472.45
  4. Step 4: Simplify right side
    136,913.84x = 14,448,271,306.62
  5. Step 5: Solve for x
    x = 14,448,271,306.62/136,913.84
  6. Step 6: Final answer
    x = 105,528.21

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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.