Home / 141,929.40-212,586.90-86,633.40

Finding the Fourth Proportional to 141,929.40, 212,586.90 and 86,633.40

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Solution

The fourth proportional to 141,929.40, 212,586.90 and 86,633.40 is: 129,762.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,929.40 : 212,586.90 = 86,633.40 : x
  2. Step 2: Convert to fraction form
    141,929.40/212,586.90 = 86,633.40/x
  3. Step 3: Cross multiply
    141,929.40x = 212,586.90 × 86,633.40
  4. Step 4: Simplify right side
    141,929.40x = 18,417,125,942.46
  5. Step 5: Solve for x
    x = 18,417,125,942.46/141,929.40
  6. Step 6: Final answer
    x = 129,762.59

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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.