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Finding the Fourth Proportional to 153,154.41, 211,322.12 and 89,479.91

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Solution

The fourth proportional to 153,154.41, 211,322.12 and 89,479.91 is: 123,464.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,154.41 : 211,322.12 = 89,479.91 : x
  2. Step 2: Convert to fraction form
    153,154.41/211,322.12 = 89,479.91/x
  3. Step 3: Cross multiply
    153,154.41x = 211,322.12 × 89,479.91
  4. Step 4: Simplify right side
    153,154.41x = 18,909,082,774.60
  5. Step 5: Solve for x
    x = 18,909,082,774.60/153,154.41
  6. Step 6: Final answer
    x = 123,464.17

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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.