Home / 108,875,703.80-163,313,555.70-78,264,702.20

Finding the Fourth Proportional to 108,875,703.80, 163,313,555.70 and 78,264,702.20

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Solution

The fourth proportional to 108,875,703.80, 163,313,555.70 and 78,264,702.20 is: 117,397,053.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,875,703.80 : 163,313,555.70 = 78,264,702.20 : x
  2. Step 2: Convert to fraction form
    108,875,703.80/163,313,555.70 = 78,264,702.20/x
  3. Step 3: Cross multiply
    108,875,703.80x = 163,313,555.70 × 78,264,702.20
  4. Step 4: Simplify right side
    108,875,703.80x = 12,781,686,802,083,612
  5. Step 5: Solve for x
    x = 12,781,686,802,083,612/108,875,703.80
  6. Step 6: Final answer
    x = 117,397,053.30

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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.