Home / 153,178.11-211,354.53-89,503.59

Finding the Fourth Proportional to 153,178.11, 211,354.53 and 89,503.59

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Solution

The fourth proportional to 153,178.11, 211,354.53 and 89,503.59 is: 123,496.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,178.11 : 211,354.53 = 89,503.59 : x
  2. Step 2: Convert to fraction form
    153,178.11/211,354.53 = 89,503.59/x
  3. Step 3: Cross multiply
    153,178.11x = 211,354.53 × 89,503.59
  4. Step 4: Simplify right side
    153,178.11x = 18,916,989,197.76
  5. Step 5: Solve for x
    x = 18,916,989,197.76/153,178.11
  6. Step 6: Final answer
    x = 123,496.69

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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.