Home / 141,811.40-212,717.10-138,312.20

Finding the Fourth Proportional to 141,811.40, 212,717.10 and 138,312.20

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Solution

The fourth proportional to 141,811.40, 212,717.10 and 138,312.20 is: 207,468.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,811.40 : 212,717.10 = 138,312.20 : x
  2. Step 2: Convert to fraction form
    141,811.40/212,717.10 = 138,312.20/x
  3. Step 3: Cross multiply
    141,811.40x = 212,717.10 × 138,312.20
  4. Step 4: Simplify right side
    141,811.40x = 29,421,370,078.62
  5. Step 5: Solve for x
    x = 29,421,370,078.62/141,811.40
  6. Step 6: Final answer
    x = 207,468.30

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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.