Home / 142,011.40-212,936.10-53,267.80

Finding the Fourth Proportional to 142,011.40, 212,936.10 and 53,267.80

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Solution

The fourth proportional to 142,011.40, 212,936.10 and 53,267.80 is: 79,871.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,011.40 : 212,936.10 = 53,267.80 : x
  2. Step 2: Convert to fraction form
    142,011.40/212,936.10 = 53,267.80/x
  3. Step 3: Cross multiply
    142,011.40x = 212,936.10 × 53,267.80
  4. Step 4: Simplify right side
    142,011.40x = 11,342,637,587.58
  5. Step 5: Solve for x
    x = 11,342,637,587.58/142,011.40
  6. Step 6: Final answer
    x = 79,871.32

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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.