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Finding the Fourth Proportional to 153,187.61, 211,392.08 and 88,646.50

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Solution

The fourth proportional to 153,187.61, 211,392.08 and 88,646.50 is: 122,328.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,187.61 : 211,392.08 = 88,646.50 : x
  2. Step 2: Convert to fraction form
    153,187.61/211,392.08 = 88,646.50/x
  3. Step 3: Cross multiply
    153,187.61x = 211,392.08 × 88,646.50
  4. Step 4: Simplify right side
    153,187.61x = 18,739,168,173.15
  5. Step 5: Solve for x
    x = 18,739,168,173.15/153,187.61
  6. Step 6: Final answer
    x = 122,328.23

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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.