Home / 127,205.60-175,557.72-72,762.80

Finding the Fourth Proportional to 127,205.60, 175,557.72 and 72,762.80

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Solution

The fourth proportional to 127,205.60, 175,557.72 and 72,762.80 is: 100,420.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,205.60 : 175,557.72 = 72,762.80 : x
  2. Step 2: Convert to fraction form
    127,205.60/175,557.72 = 72,762.80/x
  3. Step 3: Cross multiply
    127,205.60x = 175,557.72 × 72,762.80
  4. Step 4: Simplify right side
    127,205.60x = 12,774,070,391.03
  5. Step 5: Solve for x
    x = 12,774,070,391.03/127,205.60
  6. Step 6: Final answer
    x = 100,420.66

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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.