Home / 123,609,302.16-170,589,458.80-81,720,589.52

Finding the Fourth Proportional to 123,609,302.16, 170,589,458.80 and 81,720,589.52

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Solution

The fourth proportional to 123,609,302.16, 170,589,458.80 and 81,720,589.52 is: 112,780,113.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,609,302.16 : 170,589,458.80 = 81,720,589.52 : x
  2. Step 2: Convert to fraction form
    123,609,302.16/170,589,458.80 = 81,720,589.52/x
  3. Step 3: Cross multiply
    123,609,302.16x = 170,589,458.80 × 81,720,589.52
  4. Step 4: Simplify right side
    123,609,302.16x = 13,940,671,139,033,752
  5. Step 5: Solve for x
    x = 13,940,671,139,033,752/123,609,302.16
  6. Step 6: Final answer
    x = 112,780,113.60

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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.