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Finding the Fourth Proportional to 161,287,978.10, 241,931,967.15 and 161,287,978.10

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Solution

The fourth proportional to 161,287,978.10, 241,931,967.15 and 161,287,978.10 is: 241,931,967.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,287,978.10 : 241,931,967.15 = 161,287,978.10 : x
  2. Step 2: Convert to fraction form
    161,287,978.10/241,931,967.15 = 161,287,978.10/x
  3. Step 3: Cross multiply
    161,287,978.10x = 241,931,967.15 × 161,287,978.10
  4. Step 4: Simplify right side
    161,287,978.10x = 39,020,717,819,379,120
  5. Step 5: Solve for x
    x = 39,020,717,819,379,120/161,287,978.10
  6. Step 6: Final answer
    x = 241,931,967.15

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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.