Home / 112,743,618.20-169,115,427.30-85,869,762.20

Finding the Fourth Proportional to 112,743,618.20, 169,115,427.30 and 85,869,762.20

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Solution

The fourth proportional to 112,743,618.20, 169,115,427.30 and 85,869,762.20 is: 128,804,643.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,743,618.20 : 169,115,427.30 = 85,869,762.20 : x
  2. Step 2: Convert to fraction form
    112,743,618.20/169,115,427.30 = 85,869,762.20/x
  3. Step 3: Cross multiply
    112,743,618.20x = 169,115,427.30 × 85,869,762.20
  4. Step 4: Simplify right side
    112,743,618.20x = 14,521,901,526,602,390
  5. Step 5: Solve for x
    x = 14,521,901,526,602,390/112,743,618.20
  6. Step 6: Final answer
    x = 128,804,643.30

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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.