Home / 78,356,068.10-117,534,102.15-69,995,312.90

Finding the Fourth Proportional to 78,356,068.10, 117,534,102.15 and 69,995,312.90

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Solution

The fourth proportional to 78,356,068.10, 117,534,102.15 and 69,995,312.90 is: 104,992,969.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,356,068.10 : 117,534,102.15 = 69,995,312.90 : x
  2. Step 2: Convert to fraction form
    78,356,068.10/117,534,102.15 = 69,995,312.90/x
  3. Step 3: Cross multiply
    78,356,068.10x = 117,534,102.15 × 69,995,312.90
  4. Step 4: Simplify right side
    78,356,068.10x = 8,226,836,256,409,814
  5. Step 5: Solve for x
    x = 8,226,836,256,409,814/78,356,068.10
  6. Step 6: Final answer
    x = 104,992,969.35

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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.