Home / 138,157.02-190,673.64-77,730.30

Finding the Fourth Proportional to 138,157.02, 190,673.64 and 77,730.30

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Solution

The fourth proportional to 138,157.02, 190,673.64 and 77,730.30 is: 107,277.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,157.02 : 190,673.64 = 77,730.30 : x
  2. Step 2: Convert to fraction form
    138,157.02/190,673.64 = 77,730.30/x
  3. Step 3: Cross multiply
    138,157.02x = 190,673.64 × 77,730.30
  4. Step 4: Simplify right side
    138,157.02x = 14,821,119,239.29
  5. Step 5: Solve for x
    x = 14,821,119,239.29/138,157.02
  6. Step 6: Final answer
    x = 107,277.35

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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.