Home / 153,720.40-212,232.96-96,438.32

Finding the Fourth Proportional to 153,720.40, 212,232.96 and 96,438.32

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Solution

The fourth proportional to 153,720.40, 212,232.96 and 96,438.32 is: 133,146.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,720.40 : 212,232.96 = 96,438.32 : x
  2. Step 2: Convert to fraction form
    153,720.40/212,232.96 = 96,438.32/x
  3. Step 3: Cross multiply
    153,720.40x = 212,232.96 × 96,438.32
  4. Step 4: Simplify right side
    153,720.40x = 20,467,390,111.03
  5. Step 5: Solve for x
    x = 20,467,390,111.03/153,720.40
  6. Step 6: Final answer
    x = 133,146.87

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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.