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Finding the Fourth Proportional to 144,034.40, 216,051.60 and 90,890.30

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Solution

The fourth proportional to 144,034.40, 216,051.60 and 90,890.30 is: 136,335.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,034.40 : 216,051.60 = 90,890.30 : x
  2. Step 2: Convert to fraction form
    144,034.40/216,051.60 = 90,890.30/x
  3. Step 3: Cross multiply
    144,034.40x = 216,051.60 × 90,890.30
  4. Step 4: Simplify right side
    144,034.40x = 19,636,994,739.48
  5. Step 5: Solve for x
    x = 19,636,994,739.48/144,034.40
  6. Step 6: Final answer
    x = 136,335.45

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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.