Home / 130,631.51-180,285.58-74,036.81

Finding the Fourth Proportional to 130,631.51, 180,285.58 and 74,036.81

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Solution

The fourth proportional to 130,631.51, 180,285.58 and 74,036.81 is: 102,178.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,631.51 : 180,285.58 = 74,036.81 : x
  2. Step 2: Convert to fraction form
    130,631.51/180,285.58 = 74,036.81/x
  3. Step 3: Cross multiply
    130,631.51x = 180,285.58 × 74,036.81
  4. Step 4: Simplify right side
    130,631.51x = 13,347,769,775.46
  5. Step 5: Solve for x
    x = 13,347,769,775.46/130,631.51
  6. Step 6: Final answer
    x = 102,178.79

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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.