Home / 130,590.32-180,253.12-85,275.32

Finding the Fourth Proportional to 130,590.32, 180,253.12 and 85,275.32

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Solution

The fourth proportional to 130,590.32, 180,253.12 and 85,275.32 is: 117,705.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,590.32 : 180,253.12 = 85,275.32 : x
  2. Step 2: Convert to fraction form
    130,590.32/180,253.12 = 85,275.32/x
  3. Step 3: Cross multiply
    130,590.32x = 180,253.12 × 85,275.32
  4. Step 4: Simplify right side
    130,590.32x = 15,371,142,489.00
  5. Step 5: Solve for x
    x = 15,371,142,489.00/130,590.32
  6. Step 6: Final answer
    x = 117,705.07

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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.