Home / 144,003.90-216,005.85-91,256.70

Finding the Fourth Proportional to 144,003.90, 216,005.85 and 91,256.70

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Solution

The fourth proportional to 144,003.90, 216,005.85 and 91,256.70 is: 136,885.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,003.90 : 216,005.85 = 91,256.70 : x
  2. Step 2: Convert to fraction form
    144,003.90/216,005.85 = 91,256.70/x
  3. Step 3: Cross multiply
    144,003.90x = 216,005.85 × 91,256.70
  4. Step 4: Simplify right side
    144,003.90x = 19,711,981,051.70
  5. Step 5: Solve for x
    x = 19,711,981,051.70/144,003.90
  6. Step 6: Final answer
    x = 136,885.05

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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.