Home / 211,432.16-291,929.50-136,111.88

Finding the Fourth Proportional to 211,432.16, 291,929.50 and 136,111.88

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Solution

The fourth proportional to 211,432.16, 291,929.50 and 136,111.88 is: 187,932.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,432.16 : 291,929.50 = 136,111.88 : x
  2. Step 2: Convert to fraction form
    211,432.16/291,929.50 = 136,111.88/x
  3. Step 3: Cross multiply
    211,432.16x = 291,929.50 × 136,111.88
  4. Step 4: Simplify right side
    211,432.16x = 39,735,071,272.53
  5. Step 5: Solve for x
    x = 39,735,071,272.53/211,432.16
  6. Step 6: Final answer
    x = 187,932.96

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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.