Home / 102,640.32-153,987.60-43,478.16

Finding the Fourth Proportional to 102,640.32, 153,987.60 and 43,478.16

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Solution

The fourth proportional to 102,640.32, 153,987.60 and 43,478.16 is: 65,228.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,640.32 : 153,987.60 = 43,478.16 : x
  2. Step 2: Convert to fraction form
    102,640.32/153,987.60 = 43,478.16/x
  3. Step 3: Cross multiply
    102,640.32x = 153,987.60 × 43,478.16
  4. Step 4: Simplify right side
    102,640.32x = 6,695,097,510.82
  5. Step 5: Solve for x
    x = 6,695,097,510.82/102,640.32
  6. Step 6: Final answer
    x = 65,228.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.