Home / 156,905.42-236,211.86-142,955.06

Finding the Fourth Proportional to 156,905.42, 236,211.86 and 142,955.06

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Solution

The fourth proportional to 156,905.42, 236,211.86 and 142,955.06 is: 215,210.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,905.42 : 236,211.86 = 142,955.06 : x
  2. Step 2: Convert to fraction form
    156,905.42/236,211.86 = 142,955.06/x
  3. Step 3: Cross multiply
    156,905.42x = 236,211.86 × 142,955.06
  4. Step 4: Simplify right side
    156,905.42x = 33,767,680,619.01
  5. Step 5: Solve for x
    x = 33,767,680,619.01/156,905.42
  6. Step 6: Final answer
    x = 215,210.42

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.