Home / 128,599.48-177,462.39-72,008.02

Finding the Fourth Proportional to 128,599.48, 177,462.39 and 72,008.02

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Solution

The fourth proportional to 128,599.48, 177,462.39 and 72,008.02 is: 99,368.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,599.48 : 177,462.39 = 72,008.02 : x
  2. Step 2: Convert to fraction form
    128,599.48/177,462.39 = 72,008.02/x
  3. Step 3: Cross multiply
    128,599.48x = 177,462.39 × 72,008.02
  4. Step 4: Simplify right side
    128,599.48x = 12,778,715,328.37
  5. Step 5: Solve for x
    x = 12,778,715,328.37/128,599.48
  6. Step 6: Final answer
    x = 99,368.33

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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.