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Finding the Fourth Proportional to 101,149, 139,585.62 and 56,437

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Solution

The fourth proportional to 101,149, 139,585.62 and 56,437 is: 77,883.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,149 : 139,585.62 = 56,437 : x
  2. Step 2: Convert to fraction form
    101,149/139,585.62 = 56,437/x
  3. Step 3: Cross multiply
    101,149x = 139,585.62 × 56,437
  4. Step 4: Simplify right side
    101,149x = 7,877,793,635.94
  5. Step 5: Solve for x
    x = 7,877,793,635.94/101,149
  6. Step 6: Final answer
    x = 77,883.06

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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.