Home / 155,027,638.16-213,938,023.70-85,413,019.04

Finding the Fourth Proportional to 155,027,638.16, 213,938,023.70 and 85,413,019.04

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Solution

The fourth proportional to 155,027,638.16, 213,938,023.70 and 85,413,019.04 is: 117,869,901.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,027,638.16 : 213,938,023.70 = 85,413,019.04 : x
  2. Step 2: Convert to fraction form
    155,027,638.16/213,938,023.70 = 85,413,019.04/x
  3. Step 3: Cross multiply
    155,027,638.16x = 213,938,023.70 × 85,413,019.04
  4. Step 4: Simplify right side
    155,027,638.16x = 18,273,092,490,598,380
  5. Step 5: Solve for x
    x = 18,273,092,490,598,380/155,027,638.16
  6. Step 6: Final answer
    x = 117,869,901.83

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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.