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Finding the Fourth Proportional to 147,007.40, 220,073.70 and 97,143.80

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Solution

The fourth proportional to 147,007.40, 220,073.70 and 97,143.80 is: 145,426.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,007.40 : 220,073.70 = 97,143.80 : x
  2. Step 2: Convert to fraction form
    147,007.40/220,073.70 = 97,143.80/x
  3. Step 3: Cross multiply
    147,007.40x = 220,073.70 × 97,143.80
  4. Step 4: Simplify right side
    147,007.40x = 21,378,795,498.06
  5. Step 5: Solve for x
    x = 21,378,795,498.06/147,007.40
  6. Step 6: Final answer
    x = 145,426.66

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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.