Home / 142,038.40-213,057.60-53,294.80

Finding the Fourth Proportional to 142,038.40, 213,057.60 and 53,294.80

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Solution

The fourth proportional to 142,038.40, 213,057.60 and 53,294.80 is: 79,942.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,038.40 : 213,057.60 = 53,294.80 : x
  2. Step 2: Convert to fraction form
    142,038.40/213,057.60 = 53,294.80/x
  3. Step 3: Cross multiply
    142,038.40x = 213,057.60 × 53,294.80
  4. Step 4: Simplify right side
    142,038.40x = 11,354,862,180.48
  5. Step 5: Solve for x
    x = 11,354,862,180.48/142,038.40
  6. Step 6: Final answer
    x = 79,942.20

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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.