Home / 103,185,386.72-142,348,912.78-61,345,711.60

Finding the Fourth Proportional to 103,185,386.72, 142,348,912.78 and 61,345,711.60

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Solution

The fourth proportional to 103,185,386.72, 142,348,912.78 and 61,345,711.60 is: 84,629,186.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,185,386.72 : 142,348,912.78 = 61,345,711.60 : x
  2. Step 2: Convert to fraction form
    103,185,386.72/142,348,912.78 = 61,345,711.60/x
  3. Step 3: Cross multiply
    103,185,386.72x = 142,348,912.78 × 61,345,711.60
  4. Step 4: Simplify right side
    103,185,386.72x = 8,732,495,349,753,908
  5. Step 5: Solve for x
    x = 8,732,495,349,753,908/103,185,386.72
  6. Step 6: Final answer
    x = 84,629,186.63

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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.