Home / 153,265.12-211,506.02-85,288.28

Finding the Fourth Proportional to 153,265.12, 211,506.02 and 85,288.28

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Solution

The fourth proportional to 153,265.12, 211,506.02 and 85,288.28 is: 117,697.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,265.12 : 211,506.02 = 85,288.28 : x
  2. Step 2: Convert to fraction form
    153,265.12/211,506.02 = 85,288.28/x
  3. Step 3: Cross multiply
    153,265.12x = 211,506.02 × 85,288.28
  4. Step 4: Simplify right side
    153,265.12x = 18,038,984,655.45
  5. Step 5: Solve for x
    x = 18,038,984,655.45/153,265.12
  6. Step 6: Final answer
    x = 117,697.91

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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.