Home / 156,718.12-234,871.86-72,467.60

Finding the Fourth Proportional to 156,718.12, 234,871.86 and 72,467.60

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Solution

The fourth proportional to 156,718.12, 234,871.86 and 72,467.60 is: 108,606.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,718.12 : 234,871.86 = 72,467.60 : x
  2. Step 2: Convert to fraction form
    156,718.12/234,871.86 = 72,467.60/x
  3. Step 3: Cross multiply
    156,718.12x = 234,871.86 × 72,467.60
  4. Step 4: Simplify right side
    156,718.12x = 17,020,600,001.74
  5. Step 5: Solve for x
    x = 17,020,600,001.74/156,718.12
  6. Step 6: Final answer
    x = 108,606.46

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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.