Home / 129,669,817.16-178,945,767.45-70,932,482.86

Finding the Fourth Proportional to 129,669,817.16, 178,945,767.45 and 70,932,482.86

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Solution

The fourth proportional to 129,669,817.16, 178,945,767.45 and 70,932,482.86 is: 97,887,602.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,669,817.16 : 178,945,767.45 = 70,932,482.86 : x
  2. Step 2: Convert to fraction form
    129,669,817.16/178,945,767.45 = 70,932,482.86/x
  3. Step 3: Cross multiply
    129,669,817.16x = 178,945,767.45 × 70,932,482.86
  4. Step 4: Simplify right side
    129,669,817.16x = 12,693,067,581,701,426
  5. Step 5: Solve for x
    x = 12,693,067,581,701,426/129,669,817.16
  6. Step 6: Final answer
    x = 97,887,602.99

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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.