Home / 138,070.04-190,587.50-121,253.38

Finding the Fourth Proportional to 138,070.04, 190,587.50 and 121,253.38

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Solution

The fourth proportional to 138,070.04, 190,587.50 and 121,253.38 is: 167,374.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,070.04 : 190,587.50 = 121,253.38 : x
  2. Step 2: Convert to fraction form
    138,070.04/190,587.50 = 121,253.38/x
  3. Step 3: Cross multiply
    138,070.04x = 190,587.50 × 121,253.38
  4. Step 4: Simplify right side
    138,070.04x = 23,109,378,560.75
  5. Step 5: Solve for x
    x = 23,109,378,560.75/138,070.04
  6. Step 6: Final answer
    x = 167,374.32

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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.