Home / 153,268.12-211,510.16-85,291.28

Finding the Fourth Proportional to 153,268.12, 211,510.16 and 85,291.28

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Solution

The fourth proportional to 153,268.12, 211,510.16 and 85,291.28 is: 117,702.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,268.12 : 211,510.16 = 85,291.28 : x
  2. Step 2: Convert to fraction form
    153,268.12/211,510.16 = 85,291.28/x
  3. Step 3: Cross multiply
    153,268.12x = 211,510.16 × 85,291.28
  4. Step 4: Simplify right side
    153,268.12x = 18,039,972,279.40
  5. Step 5: Solve for x
    x = 18,039,972,279.40/153,268.12
  6. Step 6: Final answer
    x = 117,702.05

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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.