Home / 210,990.42-291,167.57-115,506.00

Finding the Fourth Proportional to 210,990.42, 291,167.57 and 115,506.00

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Solution

The fourth proportional to 210,990.42, 291,167.57 and 115,506.00 is: 159,398.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,990.42 : 291,167.57 = 115,506.00 : x
  2. Step 2: Convert to fraction form
    210,990.42/291,167.57 = 115,506.00/x
  3. Step 3: Cross multiply
    210,990.42x = 291,167.57 × 115,506.00
  4. Step 4: Simplify right side
    210,990.42x = 33,631,602,068.34
  5. Step 5: Solve for x
    x = 33,631,602,068.34/210,990.42
  6. Step 6: Final answer
    x = 159,398.71

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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.