Home / 166,128.80-249,266.10-77,336.60

Finding the Fourth Proportional to 166,128.80, 249,266.10 and 77,336.60

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Solution

The fourth proportional to 166,128.80, 249,266.10 and 77,336.60 is: 116,038.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,128.80 : 249,266.10 = 77,336.60 : x
  2. Step 2: Convert to fraction form
    166,128.80/249,266.10 = 77,336.60/x
  3. Step 3: Cross multiply
    166,128.80x = 249,266.10 × 77,336.60
  4. Step 4: Simplify right side
    166,128.80x = 19,277,392,669.26
  5. Step 5: Solve for x
    x = 19,277,392,669.26/166,128.80
  6. Step 6: Final answer
    x = 116,038.84

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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.