Home / 138,392.02-191,016.62-90,114.45

Finding the Fourth Proportional to 138,392.02, 191,016.62 and 90,114.45

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Solution

The fourth proportional to 138,392.02, 191,016.62 and 90,114.45 is: 124,381.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,392.02 : 191,016.62 = 90,114.45 : x
  2. Step 2: Convert to fraction form
    138,392.02/191,016.62 = 90,114.45/x
  3. Step 3: Cross multiply
    138,392.02x = 191,016.62 × 90,114.45
  4. Step 4: Simplify right side
    138,392.02x = 17,213,357,652.16
  5. Step 5: Solve for x
    x = 17,213,357,652.16/138,392.02
  6. Step 6: Final answer
    x = 124,381.14

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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.