Home / 153,868.97-212,349.86-85,899.30

Finding the Fourth Proportional to 153,868.97, 212,349.86 and 85,899.30

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Solution

The fourth proportional to 153,868.97, 212,349.86 and 85,899.30 is: 118,547.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,868.97 : 212,349.86 = 85,899.30 : x
  2. Step 2: Convert to fraction form
    153,868.97/212,349.86 = 85,899.30/x
  3. Step 3: Cross multiply
    153,868.97x = 212,349.86 × 85,899.30
  4. Step 4: Simplify right side
    153,868.97x = 18,240,703,899.60
  5. Step 5: Solve for x
    x = 18,240,703,899.60/153,868.97
  6. Step 6: Final answer
    x = 118,547.00

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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.