Home / 101,421.39-139,960.30-56,095.81

Finding the Fourth Proportional to 101,421.39, 139,960.30 and 56,095.81

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Solution

The fourth proportional to 101,421.39, 139,960.30 and 56,095.81 is: 77,411.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,421.39 : 139,960.30 = 56,095.81 : x
  2. Step 2: Convert to fraction form
    101,421.39/139,960.30 = 56,095.81/x
  3. Step 3: Cross multiply
    101,421.39x = 139,960.30 × 56,095.81
  4. Step 4: Simplify right side
    101,421.39x = 7,851,186,396.34
  5. Step 5: Solve for x
    x = 7,851,186,396.34/101,421.39
  6. Step 6: Final answer
    x = 77,411.54

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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.