Home / 128,039.04-176,666.88-74,317.44

Finding the Fourth Proportional to 128,039.04, 176,666.88 and 74,317.44

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Solution

The fourth proportional to 128,039.04, 176,666.88 and 74,317.44 is: 102,542.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,039.04 : 176,666.88 = 74,317.44 : x
  2. Step 2: Convert to fraction form
    128,039.04/176,666.88 = 74,317.44/x
  3. Step 3: Cross multiply
    128,039.04x = 176,666.88 × 74,317.44
  4. Step 4: Simplify right side
    128,039.04x = 13,129,430,254.39
  5. Step 5: Solve for x
    x = 13,129,430,254.39/128,039.04
  6. Step 6: Final answer
    x = 102,542.40

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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.