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Finding the Fourth Proportional to 153,302.80, 211,583.16 and 89,628.40

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Solution

The fourth proportional to 153,302.80, 211,583.16 and 89,628.40 is: 123,701.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,302.80 : 211,583.16 = 89,628.40 : x
  2. Step 2: Convert to fraction form
    153,302.80/211,583.16 = 89,628.40/x
  3. Step 3: Cross multiply
    153,302.80x = 211,583.16 × 89,628.40
  4. Step 4: Simplify right side
    153,302.80x = 18,963,860,097.74
  5. Step 5: Solve for x
    x = 18,963,860,097.74/153,302.80
  6. Step 6: Final answer
    x = 123,701.98

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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.