Home / 88,054.56-121,690.08-72,113.76

Finding the Fourth Proportional to 88,054.56, 121,690.08 and 72,113.76

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Solution

The fourth proportional to 88,054.56, 121,690.08 and 72,113.76 is: 99,660.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,054.56 : 121,690.08 = 72,113.76 : x
  2. Step 2: Convert to fraction form
    88,054.56/121,690.08 = 72,113.76/x
  3. Step 3: Cross multiply
    88,054.56x = 121,690.08 × 72,113.76
  4. Step 4: Simplify right side
    88,054.56x = 8,775,529,223.50
  5. Step 5: Solve for x
    x = 8,775,529,223.50/88,054.56
  6. Step 6: Final answer
    x = 99,660.13

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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.