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Finding the Fourth Proportional to 153,796.32, 212,260.32 and 90,154.80

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Solution

The fourth proportional to 153,796.32, 212,260.32 and 90,154.80 is: 124,426.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,796.32 : 212,260.32 = 90,154.80 : x
  2. Step 2: Convert to fraction form
    153,796.32/212,260.32 = 90,154.80/x
  3. Step 3: Cross multiply
    153,796.32x = 212,260.32 × 90,154.80
  4. Step 4: Simplify right side
    153,796.32x = 19,136,286,697.54
  5. Step 5: Solve for x
    x = 19,136,286,697.54/153,796.32
  6. Step 6: Final answer
    x = 124,426.17

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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.