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Finding the Fourth Proportional to 113,428.68, 156,502.68 and 75,710.22

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Solution

The fourth proportional to 113,428.68, 156,502.68 and 75,710.22 is: 104,460.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,428.68 : 156,502.68 = 75,710.22 : x
  2. Step 2: Convert to fraction form
    113,428.68/156,502.68 = 75,710.22/x
  3. Step 3: Cross multiply
    113,428.68x = 156,502.68 × 75,710.22
  4. Step 4: Simplify right side
    113,428.68x = 11,848,852,333.39
  5. Step 5: Solve for x
    x = 11,848,852,333.39/113,428.68
  6. Step 6: Final answer
    x = 104,460.81

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1.5x scale

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.