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Finding the Fourth Proportional to 153,228.60, 230,015.70 and 90,934.20

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Solution

The fourth proportional to 153,228.60, 230,015.70 and 90,934.20 is: 136,503.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,228.60 : 230,015.70 = 90,934.20 : x
  2. Step 2: Convert to fraction form
    153,228.60/230,015.70 = 90,934.20/x
  3. Step 3: Cross multiply
    153,228.60x = 230,015.70 × 90,934.20
  4. Step 4: Simplify right side
    153,228.60x = 20,916,293,666.94
  5. Step 5: Solve for x
    x = 20,916,293,666.94/153,228.60
  6. Step 6: Final answer
    x = 136,503.85

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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.