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Finding the Fourth Proportional to 251,355.71, 346,877.55 and 136,642.10

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Solution

The fourth proportional to 251,355.71, 346,877.55 and 136,642.10 is: 188,569.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,355.71 : 346,877.55 = 136,642.10 : x
  2. Step 2: Convert to fraction form
    251,355.71/346,877.55 = 136,642.10/x
  3. Step 3: Cross multiply
    251,355.71x = 346,877.55 × 136,642.10
  4. Step 4: Simplify right side
    251,355.71x = 47,398,075,140.47
  5. Step 5: Solve for x
    x = 47,398,075,140.47/251,355.71
  6. Step 6: Final answer
    x = 188,569.72

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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.