Home / 130,836,612.79-180,555,719.75-72,101,385.32

Finding the Fourth Proportional to 130,836,612.79, 180,555,719.75 and 72,101,385.32

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Solution

The fourth proportional to 130,836,612.79, 180,555,719.75 and 72,101,385.32 is: 99,500,569.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,836,612.79 : 180,555,719.75 = 72,101,385.32 : x
  2. Step 2: Convert to fraction form
    130,836,612.79/180,555,719.75 = 72,101,385.32/x
  3. Step 3: Cross multiply
    130,836,612.79x = 180,555,719.75 × 72,101,385.32
  4. Step 4: Simplify right side
    130,836,612.79x = 13,018,317,521,424,682
  5. Step 5: Solve for x
    x = 13,018,317,521,424,682/130,836,612.79
  6. Step 6: Final answer
    x = 99,500,569.79

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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.