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Finding the Fourth Proportional to 191,935.74, 287,334.99 and 142,239

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Solution

The fourth proportional to 191,935.74, 287,334.99 and 142,239 is: 212,937.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,935.74 : 287,334.99 = 142,239 : x
  2. Step 2: Convert to fraction form
    191,935.74/287,334.99 = 142,239/x
  3. Step 3: Cross multiply
    191,935.74x = 287,334.99 × 142,239
  4. Step 4: Simplify right side
    191,935.74x = 40,870,241,642.61
  5. Step 5: Solve for x
    x = 40,870,241,642.61/191,935.74
  6. Step 6: Final answer
    x = 212,937.11

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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.