Home / 138,276.81-190,822.14-77,847.93

Finding the Fourth Proportional to 138,276.81, 190,822.14 and 77,847.93

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Solution

The fourth proportional to 138,276.81, 190,822.14 and 77,847.93 is: 107,430.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,276.81 : 190,822.14 = 77,847.93 : x
  2. Step 2: Convert to fraction form
    138,276.81/190,822.14 = 77,847.93/x
  3. Step 3: Cross multiply
    138,276.81x = 190,822.14 × 77,847.93
  4. Step 4: Simplify right side
    138,276.81x = 14,855,108,597.17
  5. Step 5: Solve for x
    x = 14,855,108,597.17/138,276.81
  6. Step 6: Final answer
    x = 107,430.22

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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.