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Finding the Fourth Proportional to 153,246.60, 211,476.02 and 85,260.06

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Solution

The fourth proportional to 153,246.60, 211,476.02 and 85,260.06 is: 117,656.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,246.60 : 211,476.02 = 85,260.06 : x
  2. Step 2: Convert to fraction form
    153,246.60/211,476.02 = 85,260.06/x
  3. Step 3: Cross multiply
    153,246.60x = 211,476.02 × 85,260.06
  4. Step 4: Simplify right side
    153,246.60x = 18,030,457,727.46
  5. Step 5: Solve for x
    x = 18,030,457,727.46/153,246.60
  6. Step 6: Final answer
    x = 117,656.49

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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.