Home / 199,702,487.40-299,586,908.70-78,537,892.20

Finding the Fourth Proportional to 199,702,487.40, 299,586,908.70 and 78,537,892.20

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Solution

The fourth proportional to 199,702,487.40, 299,586,908.70 and 78,537,892.20 is: 117,819,886.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,702,487.40 : 299,586,908.70 = 78,537,892.20 : x
  2. Step 2: Convert to fraction form
    199,702,487.40/299,586,908.70 = 78,537,892.20/x
  3. Step 3: Cross multiply
    199,702,487.40x = 299,586,908.70 × 78,537,892.20
  4. Step 4: Simplify right side
    199,702,487.40x = 23,528,924,340,011,844
  5. Step 5: Solve for x
    x = 23,528,924,340,011,844/199,702,487.40
  6. Step 6: Final answer
    x = 117,819,886.20

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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.