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Finding the Fourth Proportional to 130,210.90, 194,781.63 and 103,966.90

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Solution

The fourth proportional to 130,210.90, 194,781.63 and 103,966.90 is: 155,523.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,210.90 : 194,781.63 = 103,966.90 : x
  2. Step 2: Convert to fraction form
    130,210.90/194,781.63 = 103,966.90/x
  3. Step 3: Cross multiply
    130,210.90x = 194,781.63 × 103,966.90
  4. Step 4: Simplify right side
    130,210.90x = 20,250,842,248.05
  5. Step 5: Solve for x
    x = 20,250,842,248.05/130,210.90
  6. Step 6: Final answer
    x = 155,523.40

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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.