Home / 128,117.22-176,804.15-70,759.50

Finding the Fourth Proportional to 128,117.22, 176,804.15 and 70,759.50

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Solution

The fourth proportional to 128,117.22, 176,804.15 and 70,759.50 is: 97,649.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,117.22 : 176,804.15 = 70,759.50 : x
  2. Step 2: Convert to fraction form
    128,117.22/176,804.15 = 70,759.50/x
  3. Step 3: Cross multiply
    128,117.22x = 176,804.15 × 70,759.50
  4. Step 4: Simplify right side
    128,117.22x = 12,510,572,898.13
  5. Step 5: Solve for x
    x = 12,510,572,898.13/128,117.22
  6. Step 6: Final answer
    x = 97,649.43

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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.