Home / 128,242.06-176,968.55-70,878.42

Finding the Fourth Proportional to 128,242.06, 176,968.55 and 70,878.42

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Solution

The fourth proportional to 128,242.06, 176,968.55 and 70,878.42 is: 97,809.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,242.06 : 176,968.55 = 70,878.42 : x
  2. Step 2: Convert to fraction form
    128,242.06/176,968.55 = 70,878.42/x
  3. Step 3: Cross multiply
    128,242.06x = 176,968.55 × 70,878.42
  4. Step 4: Simplify right side
    128,242.06x = 12,543,250,494.47
  5. Step 5: Solve for x
    x = 12,543,250,494.47/128,242.06
  6. Step 6: Final answer
    x = 97,809.18

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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.