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Finding the Fourth Proportional to 147,260.60, 220,890.90 and 77,130.80

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Solution

The fourth proportional to 147,260.60, 220,890.90 and 77,130.80 is: 115,696.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,260.60 : 220,890.90 = 77,130.80 : x
  2. Step 2: Convert to fraction form
    147,260.60/220,890.90 = 77,130.80/x
  3. Step 3: Cross multiply
    147,260.60x = 220,890.90 × 77,130.80
  4. Step 4: Simplify right side
    147,260.60x = 17,037,491,829.72
  5. Step 5: Solve for x
    x = 17,037,491,829.72/147,260.60
  6. Step 6: Final answer
    x = 115,696.20

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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.