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Finding the Fourth Proportional to 169,764,530.78, 254,646,763.37 and 72,657,269.30

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Solution

The fourth proportional to 169,764,530.78, 254,646,763.37 and 72,657,269.30 is: 108,985,889.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,764,530.78 : 254,646,763.37 = 72,657,269.30 : x
  2. Step 2: Convert to fraction form
    169,764,530.78/254,646,763.37 = 72,657,269.30/x
  3. Step 3: Cross multiply
    169,764,530.78x = 254,646,763.37 × 72,657,269.30
  4. Step 4: Simplify right side
    169,764,530.78x = 18,501,938,462,547,464
  5. Step 5: Solve for x
    x = 18,501,938,462,547,464/169,764,530.78
  6. Step 6: Final answer
    x = 108,985,889.91

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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.