Home / 218,903,143.30-328,138,138.95-103,685,172.10

Finding the Fourth Proportional to 218,903,143.30, 328,138,138.95 and 103,685,172.10

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Solution

The fourth proportional to 218,903,143.30, 328,138,138.95 and 103,685,172.10 is: 155,425,175.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,903,143.30 : 328,138,138.95 = 103,685,172.10 : x
  2. Step 2: Convert to fraction form
    218,903,143.30/328,138,138.95 = 103,685,172.10/x
  3. Step 3: Cross multiply
    218,903,143.30x = 328,138,138.95 × 103,685,172.10
  4. Step 4: Simplify right side
    218,903,143.30x = 34,023,059,409,604,460
  5. Step 5: Solve for x
    x = 34,023,059,409,604,460/218,903,143.30
  6. Step 6: Final answer
    x = 155,425,175.25

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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.