Home / 187,132.04-258,356.61-121,783.12

Finding the Fourth Proportional to 187,132.04, 258,356.61 and 121,783.12

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Solution

The fourth proportional to 187,132.04, 258,356.61 and 121,783.12 is: 168,135.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,132.04 : 258,356.61 = 121,783.12 : x
  2. Step 2: Convert to fraction form
    187,132.04/258,356.61 = 121,783.12/x
  3. Step 3: Cross multiply
    187,132.04x = 258,356.61 × 121,783.12
  4. Step 4: Simplify right side
    187,132.04x = 31,463,474,038.42
  5. Step 5: Solve for x
    x = 31,463,474,038.42/187,132.04
  6. Step 6: Final answer
    x = 168,135.15

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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.