Home / 130,176.15-179,637.56-75,728.45

Finding the Fourth Proportional to 130,176.15, 179,637.56 and 75,728.45

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Solution

The fourth proportional to 130,176.15, 179,637.56 and 75,728.45 is: 104,502.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,176.15 : 179,637.56 = 75,728.45 : x
  2. Step 2: Convert to fraction form
    130,176.15/179,637.56 = 75,728.45/x
  3. Step 3: Cross multiply
    130,176.15x = 179,637.56 × 75,728.45
  4. Step 4: Simplify right side
    130,176.15x = 13,603,673,980.58
  5. Step 5: Solve for x
    x = 13,603,673,980.58/130,176.15
  6. Step 6: Final answer
    x = 104,502.05

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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.