Home / 100,307,955.89-138,440,109.66-61,172,434.55

Finding the Fourth Proportional to 100,307,955.89, 138,440,109.66 and 61,172,434.55

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Solution

The fourth proportional to 100,307,955.89, 138,440,109.66 and 61,172,434.55 is: 84,427,186.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,307,955.89 : 138,440,109.66 = 61,172,434.55 : x
  2. Step 2: Convert to fraction form
    100,307,955.89/138,440,109.66 = 61,172,434.55/x
  3. Step 3: Cross multiply
    100,307,955.89x = 138,440,109.66 × 61,172,434.55
  4. Step 4: Simplify right side
    100,307,955.89x = 8,468,718,547,271,172
  5. Step 5: Solve for x
    x = 8,468,718,547,271,172/100,307,955.89
  6. Step 6: Final answer
    x = 84,427,186.98

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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.