Home / 130,591.80-180,152.64-85,248.81

Finding the Fourth Proportional to 130,591.80, 180,152.64 and 85,248.81

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Solution

The fourth proportional to 130,591.80, 180,152.64 and 85,248.81 is: 117,601.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,591.80 : 180,152.64 = 85,248.81 : x
  2. Step 2: Convert to fraction form
    130,591.80/180,152.64 = 85,248.81/x
  3. Step 3: Cross multiply
    130,591.80x = 180,152.64 × 85,248.81
  4. Step 4: Simplify right side
    130,591.80x = 15,357,798,178.36
  5. Step 5: Solve for x
    x = 15,357,798,178.36/130,591.80
  6. Step 6: Final answer
    x = 117,601.55

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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.