Home / 153,121.65-211,238.98-89,421.63

Finding the Fourth Proportional to 153,121.65, 211,238.98 and 89,421.63

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Solution

The fourth proportional to 153,121.65, 211,238.98 and 89,421.63 is: 123,361.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,121.65 : 211,238.98 = 89,421.63 : x
  2. Step 2: Convert to fraction form
    153,121.65/211,238.98 = 89,421.63/x
  3. Step 3: Cross multiply
    153,121.65x = 211,238.98 × 89,421.63
  4. Step 4: Simplify right side
    153,121.65x = 18,889,333,911.14
  5. Step 5: Solve for x
    x = 18,889,333,911.14/153,121.65
  6. Step 6: Final answer
    x = 123,361.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.