Home / 138,318.18-190,649.62-97,980.18

Finding the Fourth Proportional to 138,318.18, 190,649.62 and 97,980.18

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Solution

The fourth proportional to 138,318.18, 190,649.62 and 97,980.18 is: 135,050.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,318.18 : 190,649.62 = 97,980.18 : x
  2. Step 2: Convert to fraction form
    138,318.18/190,649.62 = 97,980.18/x
  3. Step 3: Cross multiply
    138,318.18x = 190,649.62 × 97,980.18
  4. Step 4: Simplify right side
    138,318.18x = 18,679,884,084.53
  5. Step 5: Solve for x
    x = 18,679,884,084.53/138,318.18
  6. Step 6: Final answer
    x = 135,050.10

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1.5x scale

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.