Home / 142,810.30-214,215.45-120,000.70

Finding the Fourth Proportional to 142,810.30, 214,215.45 and 120,000.70

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Solution

The fourth proportional to 142,810.30, 214,215.45 and 120,000.70 is: 180,001.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,810.30 : 214,215.45 = 120,000.70 : x
  2. Step 2: Convert to fraction form
    142,810.30/214,215.45 = 120,000.70/x
  3. Step 3: Cross multiply
    142,810.30x = 214,215.45 × 120,000.70
  4. Step 4: Simplify right side
    142,810.30x = 25,706,003,950.82
  5. Step 5: Solve for x
    x = 25,706,003,950.82/142,810.30
  6. Step 6: Final answer
    x = 180,001.05

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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.