Home / 153,999.57-212,504.40-86,011.14

Finding the Fourth Proportional to 153,999.57, 212,504.40 and 86,011.14

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Solution

The fourth proportional to 153,999.57, 212,504.40 and 86,011.14 is: 118,686.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,999.57 : 212,504.40 = 86,011.14 : x
  2. Step 2: Convert to fraction form
    153,999.57/212,504.40 = 86,011.14/x
  3. Step 3: Cross multiply
    153,999.57x = 212,504.40 × 86,011.14
  4. Step 4: Simplify right side
    153,999.57x = 18,277,745,699.02
  5. Step 5: Solve for x
    x = 18,277,745,699.02/153,999.57
  6. Step 6: Final answer
    x = 118,686.99

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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.