Home / 129,111,955.10-178,185,173.43-74,118,441.50

Finding the Fourth Proportional to 129,111,955.10, 178,185,173.43 and 74,118,441.50

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Solution

The fourth proportional to 129,111,955.10, 178,185,173.43 and 74,118,441.50 is: 102,289,577.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,111,955.10 : 178,185,173.43 = 74,118,441.50 : x
  2. Step 2: Convert to fraction form
    129,111,955.10/178,185,173.43 = 74,118,441.50/x
  3. Step 3: Cross multiply
    129,111,955.10x = 178,185,173.43 × 74,118,441.50
  4. Step 4: Simplify right side
    129,111,955.10x = 13,206,807,353,038,810
  5. Step 5: Solve for x
    x = 13,206,807,353,038,810/129,111,955.10
  6. Step 6: Final answer
    x = 102,289,577.62

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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.