Home / 82,139,242.16-123,031,734.32-77,309,938.16

Finding the Fourth Proportional to 82,139,242.16, 123,031,734.32 and 77,309,938.16

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Solution

The fourth proportional to 82,139,242.16, 123,031,734.32 and 77,309,938.16 is: 115,798,192.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,139,242.16 : 123,031,734.32 = 77,309,938.16 : x
  2. Step 2: Convert to fraction form
    82,139,242.16/123,031,734.32 = 77,309,938.16/x
  3. Step 3: Cross multiply
    82,139,242.16x = 123,031,734.32 × 77,309,938.16
  4. Step 4: Simplify right side
    82,139,242.16x = 9,511,575,771,996,748
  5. Step 5: Solve for x
    x = 9,511,575,771,996,748/82,139,242.16
  6. Step 6: Final answer
    x = 115,798,192.46

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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.