Home / 128,887.02-177,795.30-75,152.40

Finding the Fourth Proportional to 128,887.02, 177,795.30 and 75,152.40

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Solution

The fourth proportional to 128,887.02, 177,795.30 and 75,152.40 is: 103,670.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,887.02 : 177,795.30 = 75,152.40 : x
  2. Step 2: Convert to fraction form
    128,887.02/177,795.30 = 75,152.40/x
  3. Step 3: Cross multiply
    128,887.02x = 177,795.30 × 75,152.40
  4. Step 4: Simplify right side
    128,887.02x = 13,361,743,503.72
  5. Step 5: Solve for x
    x = 13,361,743,503.72/128,887.02
  6. Step 6: Final answer
    x = 103,670.20

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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.