Home / 130,807.72-180,509.32-74,217.88

Finding the Fourth Proportional to 130,807.72, 180,509.32 and 74,217.88

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Solution

The fourth proportional to 130,807.72, 180,509.32 and 74,217.88 is: 102,417.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,807.72 : 180,509.32 = 74,217.88 : x
  2. Step 2: Convert to fraction form
    130,807.72/180,509.32 = 74,217.88/x
  3. Step 3: Cross multiply
    130,807.72x = 180,509.32 × 74,217.88
  4. Step 4: Simplify right side
    130,807.72x = 13,397,019,050.64
  5. Step 5: Solve for x
    x = 13,397,019,050.64/130,807.72
  6. Step 6: Final answer
    x = 102,417.65

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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.