Home / 100,012,228.20-149,620,211.10-86,696,951.40

Finding the Fourth Proportional to 100,012,228.20, 149,620,211.10 and 86,696,951.40

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Solution

The fourth proportional to 100,012,228.20, 149,620,211.10 and 86,696,951.40 is: 129,700,301.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,012,228.20 : 149,620,211.10 = 86,696,951.40 : x
  2. Step 2: Convert to fraction form
    100,012,228.20/149,620,211.10 = 86,696,951.40/x
  3. Step 3: Cross multiply
    100,012,228.20x = 149,620,211.10 × 86,696,951.40
  4. Step 4: Simplify right side
    100,012,228.20x = 12,971,616,170,194,440
  5. Step 5: Solve for x
    x = 12,971,616,170,194,440/100,012,228.20
  6. Step 6: Final answer
    x = 129,700,301.69

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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.