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Finding the Fourth Proportional to 202,711.66, 279,740.54 and 112,071.45

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Solution

The fourth proportional to 202,711.66, 279,740.54 and 112,071.45 is: 154,657.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,711.66 : 279,740.54 = 112,071.45 : x
  2. Step 2: Convert to fraction form
    202,711.66/279,740.54 = 112,071.45/x
  3. Step 3: Cross multiply
    202,711.66x = 279,740.54 × 112,071.45
  4. Step 4: Simplify right side
    202,711.66x = 31,350,927,066.85
  5. Step 5: Solve for x
    x = 31,350,927,066.85/202,711.66
  6. Step 6: Final answer
    x = 154,657.74

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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.