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Finding the Fourth Proportional to 101,370.16, 139,885.14 and 56,045.50

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Solution

The fourth proportional to 101,370.16, 139,885.14 and 56,045.50 is: 77,339.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,370.16 : 139,885.14 = 56,045.50 : x
  2. Step 2: Convert to fraction form
    101,370.16/139,885.14 = 56,045.50/x
  3. Step 3: Cross multiply
    101,370.16x = 139,885.14 × 56,045.50
  4. Step 4: Simplify right side
    101,370.16x = 7,839,932,613.87
  5. Step 5: Solve for x
    x = 7,839,932,613.87/101,370.16
  6. Step 6: Final answer
    x = 77,339.65

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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.