Home / 210,159,215.91-314,965,353.15-85,516,556.90

Finding the Fourth Proportional to 210,159,215.91, 314,965,353.15 and 85,516,556.90

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Solution

The fourth proportional to 210,159,215.91, 314,965,353.15 and 85,516,556.90 is: 128,163,556.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,159,215.91 : 314,965,353.15 = 85,516,556.90 : x
  2. Step 2: Convert to fraction form
    210,159,215.91/314,965,353.15 = 85,516,556.90/x
  3. Step 3: Cross multiply
    210,159,215.91x = 314,965,353.15 × 85,516,556.90
  4. Step 4: Simplify right side
    210,159,215.91x = 26,934,752,542,605,740
  5. Step 5: Solve for x
    x = 26,934,752,542,605,740/210,159,215.91
  6. Step 6: Final answer
    x = 128,163,556.50

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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.