Home / 126,155.80-174,087.12-72,403

Finding the Fourth Proportional to 126,155.80, 174,087.12 and 72,403

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Solution

The fourth proportional to 126,155.80, 174,087.12 and 72,403 is: 99,911.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,155.80 : 174,087.12 = 72,403 : x
  2. Step 2: Convert to fraction form
    126,155.80/174,087.12 = 72,403/x
  3. Step 3: Cross multiply
    126,155.80x = 174,087.12 × 72,403
  4. Step 4: Simplify right side
    126,155.80x = 12,604,429,749.36
  5. Step 5: Solve for x
    x = 12,604,429,749.36/126,155.80
  6. Step 6: Final answer
    x = 99,911.62

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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.