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Finding the Fourth Proportional to 142,503.80, 213,647.70 and 72,433.40

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Solution

The fourth proportional to 142,503.80, 213,647.70 and 72,433.40 is: 108,595.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,503.80 : 213,647.70 = 72,433.40 : x
  2. Step 2: Convert to fraction form
    142,503.80/213,647.70 = 72,433.40/x
  3. Step 3: Cross multiply
    142,503.80x = 213,647.70 × 72,433.40
  4. Step 4: Simplify right side
    142,503.80x = 15,475,229,313.18
  5. Step 5: Solve for x
    x = 15,475,229,313.18/142,503.80
  6. Step 6: Final answer
    x = 108,595.20

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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.