Home / 117,115,457.84-161,417,600.75-77,887,140.42

Finding the Fourth Proportional to 117,115,457.84, 161,417,600.75 and 77,887,140.42

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Solution

The fourth proportional to 117,115,457.84, 161,417,600.75 and 77,887,140.42 is: 107,350,093.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,115,457.84 : 161,417,600.75 = 77,887,140.42 : x
  2. Step 2: Convert to fraction form
    117,115,457.84/161,417,600.75 = 77,887,140.42/x
  3. Step 3: Cross multiply
    117,115,457.84x = 161,417,600.75 × 77,887,140.42
  4. Step 4: Simplify right side
    117,115,457.84x = 12,572,355,335,874,748
  5. Step 5: Solve for x
    x = 12,572,355,335,874,748/117,115,457.84
  6. Step 6: Final answer
    x = 107,350,093.38

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1.5x scale

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.