Home / 140,068.40-193,310.51-77,985.14

Finding the Fourth Proportional to 140,068.40, 193,310.51 and 77,985.14

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Solution

The fourth proportional to 140,068.40, 193,310.51 and 77,985.14 is: 107,628.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,068.40 : 193,310.51 = 77,985.14 : x
  2. Step 2: Convert to fraction form
    140,068.40/193,310.51 = 77,985.14/x
  3. Step 3: Cross multiply
    140,068.40x = 193,310.51 × 77,985.14
  4. Step 4: Simplify right side
    140,068.40x = 15,075,346,795.90
  5. Step 5: Solve for x
    x = 15,075,346,795.90/140,068.40
  6. Step 6: Final answer
    x = 107,628.46

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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.