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Finding the Fourth Proportional to 152,398.88, 210,292.46 and 87,867.40

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Solution

The fourth proportional to 152,398.88, 210,292.46 and 87,867.40 is: 121,246.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,398.88 : 210,292.46 = 87,867.40 : x
  2. Step 2: Convert to fraction form
    152,398.88/210,292.46 = 87,867.40/x
  3. Step 3: Cross multiply
    152,398.88x = 210,292.46 × 87,867.40
  4. Step 4: Simplify right side
    152,398.88x = 18,477,851,699.80
  5. Step 5: Solve for x
    x = 18,477,851,699.80/152,398.88
  6. Step 6: Final answer
    x = 121,246.64

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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.