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Finding the Fourth Proportional to 207,681.23, 286,599.86 and 112,187.91

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Solution

The fourth proportional to 207,681.23, 286,599.86 and 112,187.91 is: 154,819.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,681.23 : 286,599.86 = 112,187.91 : x
  2. Step 2: Convert to fraction form
    207,681.23/286,599.86 = 112,187.91/x
  3. Step 3: Cross multiply
    207,681.23x = 286,599.86 × 112,187.91
  4. Step 4: Simplify right side
    207,681.23x = 32,153,038,738.75
  5. Step 5: Solve for x
    x = 32,153,038,738.75/207,681.23
  6. Step 6: Final answer
    x = 154,819.18

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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.