Home / 138,030.83-190,484.51-77,598.10

Finding the Fourth Proportional to 138,030.83, 190,484.51 and 77,598.10

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Solution

The fourth proportional to 138,030.83, 190,484.51 and 77,598.10 is: 107,086.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,030.83 : 190,484.51 = 77,598.10 : x
  2. Step 2: Convert to fraction form
    138,030.83/190,484.51 = 77,598.10/x
  3. Step 3: Cross multiply
    138,030.83x = 190,484.51 × 77,598.10
  4. Step 4: Simplify right side
    138,030.83x = 14,781,236,342.04
  5. Step 5: Solve for x
    x = 14,781,236,342.04/138,030.83
  6. Step 6: Final answer
    x = 107,086.48

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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.