Home / 153,705.40-212,129.76-90,096.64

Finding the Fourth Proportional to 153,705.40, 212,129.76 and 90,096.64

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Solution

The fourth proportional to 153,705.40, 212,129.76 and 90,096.64 is: 124,342.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,705.40 : 212,129.76 = 90,096.64 : x
  2. Step 2: Convert to fraction form
    153,705.40/212,129.76 = 90,096.64/x
  3. Step 3: Cross multiply
    153,705.40x = 212,129.76 × 90,096.64
  4. Step 4: Simplify right side
    153,705.40x = 19,112,178,620.01
  5. Step 5: Solve for x
    x = 19,112,178,620.01/153,705.40
  6. Step 6: Final answer
    x = 124,342.92

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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.