Home / 88,210.56-121,734.72-51,931.20

Finding the Fourth Proportional to 88,210.56, 121,734.72 and 51,931.20

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Solution

The fourth proportional to 88,210.56, 121,734.72 and 51,931.20 is: 71,667.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,210.56 : 121,734.72 = 51,931.20 : x
  2. Step 2: Convert to fraction form
    88,210.56/121,734.72 = 51,931.20/x
  3. Step 3: Cross multiply
    88,210.56x = 121,734.72 × 51,931.20
  4. Step 4: Simplify right side
    88,210.56x = 6,321,830,091.26
  5. Step 5: Solve for x
    x = 6,321,830,091.26/88,210.56
  6. Step 6: Final answer
    x = 71,667.50

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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.