Home / 212,900.40-293,840.28-128,023.20

Finding the Fourth Proportional to 212,900.40, 293,840.28 and 128,023.20

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Solution

The fourth proportional to 212,900.40, 293,840.28 and 128,023.20 is: 176,694.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,900.40 : 293,840.28 = 128,023.20 : x
  2. Step 2: Convert to fraction form
    212,900.40/293,840.28 = 128,023.20/x
  3. Step 3: Cross multiply
    212,900.40x = 293,840.28 × 128,023.20
  4. Step 4: Simplify right side
    212,900.40x = 37,618,372,934.50
  5. Step 5: Solve for x
    x = 37,618,372,934.50/212,900.40
  6. Step 6: Final answer
    x = 176,694.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.