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Finding the Fourth Proportional to 123,663,894.80, 185,495,842.20 and 42,884,862.80

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Solution

The fourth proportional to 123,663,894.80, 185,495,842.20 and 42,884,862.80 is: 64,327,294.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,663,894.80 : 185,495,842.20 = 42,884,862.80 : x
  2. Step 2: Convert to fraction form
    123,663,894.80/185,495,842.20 = 42,884,862.80/x
  3. Step 3: Cross multiply
    123,663,894.80x = 185,495,842.20 × 42,884,862.80
  4. Step 4: Simplify right side
    123,663,894.80x = 7,954,963,742,717,449
  5. Step 5: Solve for x
    x = 7,954,963,742,717,449/123,663,894.80
  6. Step 6: Final answer
    x = 64,327,294.20

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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.