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Finding the Fourth Proportional to 153,253.53, 211,473.32 and 85,259.70

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Solution

The fourth proportional to 153,253.53, 211,473.32 and 85,259.70 is: 117,649.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,253.53 : 211,473.32 = 85,259.70 : x
  2. Step 2: Convert to fraction form
    153,253.53/211,473.32 = 85,259.70/x
  3. Step 3: Cross multiply
    153,253.53x = 211,473.32 × 85,259.70
  4. Step 4: Simplify right side
    153,253.53x = 18,030,151,394.91
  5. Step 5: Solve for x
    x = 18,030,151,394.91/153,253.53
  6. Step 6: Final answer
    x = 117,649.18

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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.