Home / 154,115,784.24-212,689,337.40-85,438,152.24

Finding the Fourth Proportional to 154,115,784.24, 212,689,337.40 and 85,438,152.24

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Solution

The fourth proportional to 154,115,784.24, 212,689,337.40 and 85,438,152.24 is: 117,909,947.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,115,784.24 : 212,689,337.40 = 85,438,152.24 : x
  2. Step 2: Convert to fraction form
    154,115,784.24/212,689,337.40 = 85,438,152.24/x
  3. Step 3: Cross multiply
    154,115,784.24x = 212,689,337.40 × 85,438,152.24
  4. Step 4: Simplify right side
    154,115,784.24x = 18,171,783,988,605,924
  5. Step 5: Solve for x
    x = 18,171,783,988,605,924/154,115,784.24
  6. Step 6: Final answer
    x = 117,909,947.24

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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.