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Finding the Fourth Proportional to 163,088,367.30, 225,061,978.68 and 89,749,509.30

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Solution

The fourth proportional to 163,088,367.30, 225,061,978.68 and 89,749,509.30 is: 123,854,340.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,088,367.30 : 225,061,978.68 = 89,749,509.30 : x
  2. Step 2: Convert to fraction form
    163,088,367.30/225,061,978.68 = 89,749,509.30/x
  3. Step 3: Cross multiply
    163,088,367.30x = 225,061,978.68 × 89,749,509.30
  4. Step 4: Simplify right side
    163,088,367.30x = 20,199,202,148,617,060
  5. Step 5: Solve for x
    x = 20,199,202,148,617,060/163,088,367.30
  6. Step 6: Final answer
    x = 123,854,340.34

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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.