Home / 142,721.10-214,081.65-72,737.10

Finding the Fourth Proportional to 142,721.10, 214,081.65 and 72,737.10

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Solution

The fourth proportional to 142,721.10, 214,081.65 and 72,737.10 is: 109,105.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,721.10 : 214,081.65 = 72,737.10 : x
  2. Step 2: Convert to fraction form
    142,721.10/214,081.65 = 72,737.10/x
  3. Step 3: Cross multiply
    142,721.10x = 214,081.65 × 72,737.10
  4. Step 4: Simplify right side
    142,721.10x = 15,571,678,384.22
  5. Step 5: Solve for x
    x = 15,571,678,384.22/142,721.10
  6. Step 6: Final answer
    x = 109,105.65

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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.