Home / 111,431.04-153,768.96-63,678.08

Finding the Fourth Proportional to 111,431.04, 153,768.96 and 63,678.08

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Solution

The fourth proportional to 111,431.04, 153,768.96 and 63,678.08 is: 87,872.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,431.04 : 153,768.96 = 63,678.08 : x
  2. Step 2: Convert to fraction form
    111,431.04/153,768.96 = 63,678.08/x
  3. Step 3: Cross multiply
    111,431.04x = 153,768.96 × 63,678.08
  4. Step 4: Simplify right side
    111,431.04x = 9,791,712,136.40
  5. Step 5: Solve for x
    x = 9,791,712,136.40/111,431.04
  6. Step 6: Final answer
    x = 87,872.39

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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.