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Finding the Fourth Proportional to 101,370.16, 139,885.16 and 56,045.48

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Solution

The fourth proportional to 101,370.16, 139,885.16 and 56,045.48 is: 77,339.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,370.16 : 139,885.16 = 56,045.48 : x
  2. Step 2: Convert to fraction form
    101,370.16/139,885.16 = 56,045.48/x
  3. Step 3: Cross multiply
    101,370.16x = 139,885.16 × 56,045.48
  4. Step 4: Simplify right side
    101,370.16x = 7,839,930,937.08
  5. Step 5: Solve for x
    x = 7,839,930,937.08/101,370.16
  6. Step 6: Final answer
    x = 77,339.63

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1.5x scale

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.