Home / 128,012.40-176,655.60-70,652.16

Finding the Fourth Proportional to 128,012.40, 176,655.60 and 70,652.16

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Solution

The fourth proportional to 128,012.40, 176,655.60 and 70,652.16 is: 97,499.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,012.40 : 176,655.60 = 70,652.16 : x
  2. Step 2: Convert to fraction form
    128,012.40/176,655.60 = 70,652.16/x
  3. Step 3: Cross multiply
    128,012.40x = 176,655.60 × 70,652.16
  4. Step 4: Simplify right side
    128,012.40x = 12,481,099,716.10
  5. Step 5: Solve for x
    x = 12,481,099,716.10/128,012.40
  6. Step 6: Final answer
    x = 97,499.15

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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.