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Finding the Fourth Proportional to 145,870.94, 218,718.92 and 66,886.22

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Solution

The fourth proportional to 145,870.94, 218,718.92 and 66,886.22 is: 100,289.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,870.94 : 218,718.92 = 66,886.22 : x
  2. Step 2: Convert to fraction form
    145,870.94/218,718.92 = 66,886.22/x
  3. Step 3: Cross multiply
    145,870.94x = 218,718.92 × 66,886.22
  4. Step 4: Simplify right side
    145,870.94x = 14,629,280,373.26
  5. Step 5: Solve for x
    x = 14,629,280,373.26/145,870.94
  6. Step 6: Final answer
    x = 100,289.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.