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Finding the Fourth Proportional to 141,555.70, 212,333.55 and 57,315.70

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Solution

The fourth proportional to 141,555.70, 212,333.55 and 57,315.70 is: 85,973.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,555.70 : 212,333.55 = 57,315.70 : x
  2. Step 2: Convert to fraction form
    141,555.70/212,333.55 = 57,315.70/x
  3. Step 3: Cross multiply
    141,555.70x = 212,333.55 × 57,315.70
  4. Step 4: Simplify right side
    141,555.70x = 12,170,046,051.74
  5. Step 5: Solve for x
    x = 12,170,046,051.74/141,555.70
  6. Step 6: Final answer
    x = 85,973.55

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1.5x scale

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.