Home / 156,845,005.12-216,444,910.15-86,279,095.82

Finding the Fourth Proportional to 156,845,005.12, 216,444,910.15 and 86,279,095.82

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Solution

The fourth proportional to 156,845,005.12, 216,444,910.15 and 86,279,095.82 is: 119,064,493.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,845,005.12 : 216,444,910.15 = 86,279,095.82 : x
  2. Step 2: Convert to fraction form
    156,845,005.12/216,444,910.15 = 86,279,095.82/x
  3. Step 3: Cross multiply
    156,845,005.12x = 216,444,910.15 × 86,279,095.82
  4. Step 4: Simplify right side
    156,845,005.12x = 18,674,671,143,232,964
  5. Step 5: Solve for x
    x = 18,674,671,143,232,964/156,845,005.12
  6. Step 6: Final answer
    x = 119,064,493.82

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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.