Home / 156,929.03-235,451.87-72,729.53

Finding the Fourth Proportional to 156,929.03, 235,451.87 and 72,729.53

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Solution

The fourth proportional to 156,929.03, 235,451.87 and 72,729.53 is: 109,121.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,929.03 : 235,451.87 = 72,729.53 : x
  2. Step 2: Convert to fraction form
    156,929.03/235,451.87 = 72,729.53/x
  3. Step 3: Cross multiply
    156,929.03x = 235,451.87 × 72,729.53
  4. Step 4: Simplify right side
    156,929.03x = 17,124,303,479.07
  5. Step 5: Solve for x
    x = 17,124,303,479.07/156,929.03
  6. Step 6: Final answer
    x = 109,121.32

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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.