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Finding the Fourth Proportional to 153,820.20, 230,730.30 and 100,943.40

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Solution

The fourth proportional to 153,820.20, 230,730.30 and 100,943.40 is: 151,415.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,820.20 : 230,730.30 = 100,943.40 : x
  2. Step 2: Convert to fraction form
    153,820.20/230,730.30 = 100,943.40/x
  3. Step 3: Cross multiply
    153,820.20x = 230,730.30 × 100,943.40
  4. Step 4: Simplify right side
    153,820.20x = 23,290,700,965.02
  5. Step 5: Solve for x
    x = 23,290,700,965.02/153,820.20
  6. Step 6: Final answer
    x = 151,415.10

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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.