Home / 147,799.78-221,495.28-128,029.30

Finding the Fourth Proportional to 147,799.78, 221,495.28 and 128,029.30

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Solution

The fourth proportional to 147,799.78, 221,495.28 and 128,029.30 is: 191,866.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,799.78 : 221,495.28 = 128,029.30 : x
  2. Step 2: Convert to fraction form
    147,799.78/221,495.28 = 128,029.30/x
  3. Step 3: Cross multiply
    147,799.78x = 221,495.28 × 128,029.30
  4. Step 4: Simplify right side
    147,799.78x = 28,357,885,651.70
  5. Step 5: Solve for x
    x = 28,357,885,651.70/147,799.78
  6. Step 6: Final answer
    x = 191,866.90

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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.