Home / 142,715.10-214,072.65-83,520.30

Finding the Fourth Proportional to 142,715.10, 214,072.65 and 83,520.30

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Solution

The fourth proportional to 142,715.10, 214,072.65 and 83,520.30 is: 125,280.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,715.10 : 214,072.65 = 83,520.30 : x
  2. Step 2: Convert to fraction form
    142,715.10/214,072.65 = 83,520.30/x
  3. Step 3: Cross multiply
    142,715.10x = 214,072.65 × 83,520.30
  4. Step 4: Simplify right side
    142,715.10x = 17,879,411,949.80
  5. Step 5: Solve for x
    x = 17,879,411,949.80/142,715.10
  6. Step 6: Final answer
    x = 125,280.45

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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.