Home / 156,988.80-235,137.60-139,478.40

Finding the Fourth Proportional to 156,988.80, 235,137.60 and 139,478.40

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Solution

The fourth proportional to 156,988.80, 235,137.60 and 139,478.40 is: 208,910.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,988.80 : 235,137.60 = 139,478.40 : x
  2. Step 2: Convert to fraction form
    156,988.80/235,137.60 = 139,478.40/x
  3. Step 3: Cross multiply
    156,988.80x = 235,137.60 × 139,478.40
  4. Step 4: Simplify right side
    156,988.80x = 32,796,616,227.84
  5. Step 5: Solve for x
    x = 32,796,616,227.84/156,988.80
  6. Step 6: Final answer
    x = 208,910.55

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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.