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Finding the Fourth Proportional to 157,685.40, 236,528.10 and 74,741.40

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Solution

The fourth proportional to 157,685.40, 236,528.10 and 74,741.40 is: 112,112.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,685.40 : 236,528.10 = 74,741.40 : x
  2. Step 2: Convert to fraction form
    157,685.40/236,528.10 = 74,741.40/x
  3. Step 3: Cross multiply
    157,685.40x = 236,528.10 × 74,741.40
  4. Step 4: Simplify right side
    157,685.40x = 17,678,441,333.34
  5. Step 5: Solve for x
    x = 17,678,441,333.34/157,685.40
  6. Step 6: Final answer
    x = 112,112.10

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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.