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Finding the Fourth Proportional to 144,077.80, 215,987.10 and 91,460.20

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Solution

The fourth proportional to 144,077.80, 215,987.10 and 91,460.20 is: 137,108.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,077.80 : 215,987.10 = 91,460.20 : x
  2. Step 2: Convert to fraction form
    144,077.80/215,987.10 = 91,460.20/x
  3. Step 3: Cross multiply
    144,077.80x = 215,987.10 × 91,460.20
  4. Step 4: Simplify right side
    144,077.80x = 19,754,223,363.42
  5. Step 5: Solve for x
    x = 19,754,223,363.42/144,077.80
  6. Step 6: Final answer
    x = 137,108.03

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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.