Home / 153,629.72-211,888.83-99,931.89

Finding the Fourth Proportional to 153,629.72, 211,888.83 and 99,931.89

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Solution

The fourth proportional to 153,629.72, 211,888.83 and 99,931.89 is: 137,827.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,629.72 : 211,888.83 = 99,931.89 : x
  2. Step 2: Convert to fraction form
    153,629.72/211,888.83 = 99,931.89/x
  3. Step 3: Cross multiply
    153,629.72x = 211,888.83 × 99,931.89
  4. Step 4: Simplify right side
    153,629.72x = 21,174,451,251.79
  5. Step 5: Solve for x
    x = 21,174,451,251.79/153,629.72
  6. Step 6: Final answer
    x = 137,827.83

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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.