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Finding the Fourth Proportional to 134,688.46, 185,878.43 and 74,259

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Solution

The fourth proportional to 134,688.46, 185,878.43 and 74,259 is: 102,482.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,688.46 : 185,878.43 = 74,259 : x
  2. Step 2: Convert to fraction form
    134,688.46/185,878.43 = 74,259/x
  3. Step 3: Cross multiply
    134,688.46x = 185,878.43 × 74,259
  4. Step 4: Simplify right side
    134,688.46x = 13,803,146,333.37
  5. Step 5: Solve for x
    x = 13,803,146,333.37/134,688.46
  6. Step 6: Final answer
    x = 102,482.03

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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.