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Finding the Fourth Proportional to 108,876,386.80, 163,314,580.20 and 54,456,828.40

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Solution

The fourth proportional to 108,876,386.80, 163,314,580.20 and 54,456,828.40 is: 81,685,242.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,876,386.80 : 163,314,580.20 = 54,456,828.40 : x
  2. Step 2: Convert to fraction form
    108,876,386.80/163,314,580.20 = 54,456,828.40/x
  3. Step 3: Cross multiply
    108,876,386.80x = 163,314,580.20 × 54,456,828.40
  4. Step 4: Simplify right side
    108,876,386.80x = 8,893,594,069,169,437
  5. Step 5: Solve for x
    x = 8,893,594,069,169,437/108,876,386.80
  6. Step 6: Final answer
    x = 81,685,242.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.