Home / 101,368.19-139,875.90-56,040.05

Finding the Fourth Proportional to 101,368.19, 139,875.90 and 56,040.05

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Solution

The fourth proportional to 101,368.19, 139,875.90 and 56,040.05 is: 77,328.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,368.19 : 139,875.90 = 56,040.05 : x
  2. Step 2: Convert to fraction form
    101,368.19/139,875.90 = 56,040.05/x
  3. Step 3: Cross multiply
    101,368.19x = 139,875.90 × 56,040.05
  4. Step 4: Simplify right side
    101,368.19x = 7,838,652,569.33
  5. Step 5: Solve for x
    x = 7,838,652,569.33/101,368.19
  6. Step 6: Final answer
    x = 77,328.52

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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.