Home / 151,835.12-209,531.40-83,856.32

Finding the Fourth Proportional to 151,835.12, 209,531.40 and 83,856.32

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Solution

The fourth proportional to 151,835.12, 209,531.40 and 83,856.32 is: 115,721.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,835.12 : 209,531.40 = 83,856.32 : x
  2. Step 2: Convert to fraction form
    151,835.12/209,531.40 = 83,856.32/x
  3. Step 3: Cross multiply
    151,835.12x = 209,531.40 × 83,856.32
  4. Step 4: Simplify right side
    151,835.12x = 17,570,532,128.45
  5. Step 5: Solve for x
    x = 17,570,532,128.45/151,835.12
  6. Step 6: Final answer
    x = 115,721.13

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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.