Home / 138,347.16-190,886.27-77,905.77

Finding the Fourth Proportional to 138,347.16, 190,886.27 and 77,905.77

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Solution

The fourth proportional to 138,347.16, 190,886.27 and 77,905.77 is: 107,491.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,347.16 : 190,886.27 = 77,905.77 : x
  2. Step 2: Convert to fraction form
    138,347.16/190,886.27 = 77,905.77/x
  3. Step 3: Cross multiply
    138,347.16x = 190,886.27 × 77,905.77
  4. Step 4: Simplify right side
    138,347.16x = 14,871,140,741.43
  5. Step 5: Solve for x
    x = 14,871,140,741.43/138,347.16
  6. Step 6: Final answer
    x = 107,491.48

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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.