Home / 153,960.04-212,485.98-90,318.34

Finding the Fourth Proportional to 153,960.04, 212,485.98 and 90,318.34

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Solution

The fourth proportional to 153,960.04, 212,485.98 and 90,318.34 is: 124,651.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,960.04 : 212,485.98 = 90,318.34 : x
  2. Step 2: Convert to fraction form
    153,960.04/212,485.98 = 90,318.34/x
  3. Step 3: Cross multiply
    153,960.04x = 212,485.98 × 90,318.34
  4. Step 4: Simplify right side
    153,960.04x = 19,191,380,986.87
  5. Step 5: Solve for x
    x = 19,191,380,986.87/153,960.04
  6. Step 6: Final answer
    x = 124,651.70

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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.