Home / 211,008.51-316,417.04-91,008.76

Finding the Fourth Proportional to 211,008.51, 316,417.04 and 91,008.76

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Solution

The fourth proportional to 211,008.51, 316,417.04 and 91,008.76 is: 136,471.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,008.51 : 316,417.04 = 91,008.76 : x
  2. Step 2: Convert to fraction form
    211,008.51/316,417.04 = 91,008.76/x
  3. Step 3: Cross multiply
    211,008.51x = 316,417.04 × 91,008.76
  4. Step 4: Simplify right side
    211,008.51x = 28,796,721,983.26
  5. Step 5: Solve for x
    x = 28,796,721,983.26/211,008.51
  6. Step 6: Final answer
    x = 136,471.85

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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.