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Finding the Fourth Proportional to 152,694, 210,718.80 and 93,078

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Solution

The fourth proportional to 152,694, 210,718.80 and 93,078 is: 128,448.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,694 : 210,718.80 = 93,078 : x
  2. Step 2: Convert to fraction form
    152,694/210,718.80 = 93,078/x
  3. Step 3: Cross multiply
    152,694x = 210,718.80 × 93,078
  4. Step 4: Simplify right side
    152,694x = 19,613,284,466.40
  5. Step 5: Solve for x
    x = 19,613,284,466.40/152,694
  6. Step 6: Final answer
    x = 128,448.30

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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.