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Finding the Fourth Proportional to 152,583.40, 210,543.78 and 88,071.40

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Solution

The fourth proportional to 152,583.40, 210,543.78 and 88,071.40 is: 121,526.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,583.40 : 210,543.78 = 88,071.40 : x
  2. Step 2: Convert to fraction form
    152,583.40/210,543.78 = 88,071.40/x
  3. Step 3: Cross multiply
    152,583.40x = 210,543.78 × 88,071.40
  4. Step 4: Simplify right side
    152,583.40x = 18,542,885,465.89
  5. Step 5: Solve for x
    x = 18,542,885,465.89/152,583.40
  6. Step 6: Final answer
    x = 121,526.23

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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.