Home / 127,638,261.18-191,312,159.49-77,672,881.35

Finding the Fourth Proportional to 127,638,261.18, 191,312,159.49 and 77,672,881.35

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Solution

The fourth proportional to 127,638,261.18, 191,312,159.49 and 77,672,881.35 is: 116,420,942.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,638,261.18 : 191,312,159.49 = 77,672,881.35 : x
  2. Step 2: Convert to fraction form
    127,638,261.18/191,312,159.49 = 77,672,881.35/x
  3. Step 3: Cross multiply
    127,638,261.18x = 191,312,159.49 × 77,672,881.35
  4. Step 4: Simplify right side
    127,638,261.18x = 14,859,766,664,879,046
  5. Step 5: Solve for x
    x = 14,859,766,664,879,046/127,638,261.18
  6. Step 6: Final answer
    x = 116,420,942.49

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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.