Home / 76,128.40-114,192.60-23,543.20

Finding the Fourth Proportional to 76,128.40, 114,192.60 and 23,543.20

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Solution

The fourth proportional to 76,128.40, 114,192.60 and 23,543.20 is: 35,314.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,128.40 : 114,192.60 = 23,543.20 : x
  2. Step 2: Convert to fraction form
    76,128.40/114,192.60 = 23,543.20/x
  3. Step 3: Cross multiply
    76,128.40x = 114,192.60 × 23,543.20
  4. Step 4: Simplify right side
    76,128.40x = 2,688,459,220.32
  5. Step 5: Solve for x
    x = 2,688,459,220.32/76,128.40
  6. Step 6: Final answer
    x = 35,314.80

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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.