Home / 151,362.12-208,870.56-87,688.92

Finding the Fourth Proportional to 151,362.12, 208,870.56 and 87,688.92

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Solution

The fourth proportional to 151,362.12, 208,870.56 and 87,688.92 is: 121,005.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,362.12 : 208,870.56 = 87,688.92 : x
  2. Step 2: Convert to fraction form
    151,362.12/208,870.56 = 87,688.92/x
  3. Step 3: Cross multiply
    151,362.12x = 208,870.56 × 87,688.92
  4. Step 4: Simplify right side
    151,362.12x = 18,315,633,826.20
  5. Step 5: Solve for x
    x = 18,315,633,826.20/151,362.12
  6. Step 6: Final answer
    x = 121,005.40

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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.