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Finding the Fourth Proportional to 153,926.70, 230,890.05 and 90,941.10

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Solution

The fourth proportional to 153,926.70, 230,890.05 and 90,941.10 is: 136,411.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,926.70 : 230,890.05 = 90,941.10 : x
  2. Step 2: Convert to fraction form
    153,926.70/230,890.05 = 90,941.10/x
  3. Step 3: Cross multiply
    153,926.70x = 230,890.05 × 90,941.10
  4. Step 4: Simplify right side
    153,926.70x = 20,997,395,126.06
  5. Step 5: Solve for x
    x = 20,997,395,126.06/153,926.70
  6. Step 6: Final answer
    x = 136,411.65

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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.