Home / 142,358.80-213,149.40-102,701.20

Finding the Fourth Proportional to 142,358.80, 213,149.40 and 102,701.20

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Solution

The fourth proportional to 142,358.80, 213,149.40 and 102,701.20 is: 153,771.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,358.80 : 213,149.40 = 102,701.20 : x
  2. Step 2: Convert to fraction form
    142,358.80/213,149.40 = 102,701.20/x
  3. Step 3: Cross multiply
    142,358.80x = 213,149.40 × 102,701.20
  4. Step 4: Simplify right side
    142,358.80x = 21,890,699,159.28
  5. Step 5: Solve for x
    x = 21,890,699,159.28/142,358.80
  6. Step 6: Final answer
    x = 153,771.31

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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.