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Finding the Fourth Proportional to 113,740.88, 156,970.32 and 63,439.88

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Solution

The fourth proportional to 113,740.88, 156,970.32 and 63,439.88 is: 87,551.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,740.88 : 156,970.32 = 63,439.88 : x
  2. Step 2: Convert to fraction form
    113,740.88/156,970.32 = 63,439.88/x
  3. Step 3: Cross multiply
    113,740.88x = 156,970.32 × 63,439.88
  4. Step 4: Simplify right side
    113,740.88x = 9,958,178,264.36
  5. Step 5: Solve for x
    x = 9,958,178,264.36/113,740.88
  6. Step 6: Final answer
    x = 87,551.44

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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.