Home / 191,390,564.78-287,071,960.35-74,783,995.10

Finding the Fourth Proportional to 191,390,564.78, 287,071,960.35 and 74,783,995.10

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Solution

The fourth proportional to 191,390,564.78, 287,071,960.35 and 74,783,995.10 is: 112,170,566.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,390,564.78 : 287,071,960.35 = 74,783,995.10 : x
  2. Step 2: Convert to fraction form
    191,390,564.78/287,071,960.35 = 74,783,995.10/x
  3. Step 3: Cross multiply
    191,390,564.78x = 287,071,960.35 × 74,783,995.10
  4. Step 4: Simplify right side
    191,390,564.78x = 21,468,388,076,161,796
  5. Step 5: Solve for x
    x = 21,468,388,076,161,796/191,390,564.78
  6. Step 6: Final answer
    x = 112,170,566.51

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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.