Home / 154,974,870.81-213,865,302.53-85,360,251.70

Finding the Fourth Proportional to 154,974,870.81, 213,865,302.53 and 85,360,251.70

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Solution

The fourth proportional to 154,974,870.81, 213,865,302.53 and 85,360,251.70 is: 117,797,136.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,974,870.81 : 213,865,302.53 = 85,360,251.70 : x
  2. Step 2: Convert to fraction form
    154,974,870.81/213,865,302.53 = 85,360,251.70/x
  3. Step 3: Cross multiply
    154,974,870.81x = 213,865,302.53 × 85,360,251.70
  4. Step 4: Simplify right side
    154,974,870.81x = 18,255,596,053,857,604
  5. Step 5: Solve for x
    x = 18,255,596,053,857,604/154,974,870.81
  6. Step 6: Final answer
    x = 117,797,136.78

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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.