Home / 131,278.32-181,164.60-74,688.48

Finding the Fourth Proportional to 131,278.32, 181,164.60 and 74,688.48

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Solution

The fourth proportional to 131,278.32, 181,164.60 and 74,688.48 is: 103,070.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,278.32 : 181,164.60 = 74,688.48 : x
  2. Step 2: Convert to fraction form
    131,278.32/181,164.60 = 74,688.48/x
  3. Step 3: Cross multiply
    131,278.32x = 181,164.60 × 74,688.48
  4. Step 4: Simplify right side
    131,278.32x = 13,530,908,603.81
  5. Step 5: Solve for x
    x = 13,530,908,603.81/131,278.32
  6. Step 6: Final answer
    x = 103,070.40

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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.