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Finding the Fourth Proportional to 153,149.61, 211,315.49 and 89,475.11

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Solution

The fourth proportional to 153,149.61, 211,315.49 and 89,475.11 is: 123,457.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,149.61 : 211,315.49 = 89,475.11 : x
  2. Step 2: Convert to fraction form
    153,149.61/211,315.49 = 89,475.11/x
  3. Step 3: Cross multiply
    153,149.61x = 211,315.49 × 89,475.11
  4. Step 4: Simplify right side
    153,149.61x = 18,907,475,879.56
  5. Step 5: Solve for x
    x = 18,907,475,879.56/153,149.61
  6. Step 6: Final answer
    x = 123,457.55

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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.