Home / 130,836,639.14-180,555,756.18-72,101,411.72

Finding the Fourth Proportional to 130,836,639.14, 180,555,756.18 and 72,101,411.72

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Solution

The fourth proportional to 130,836,639.14, 180,555,756.18 and 72,101,411.72 is: 99,500,606.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,836,639.14 : 180,555,756.18 = 72,101,411.72 : x
  2. Step 2: Convert to fraction form
    130,836,639.14/180,555,756.18 = 72,101,411.72/x
  3. Step 3: Cross multiply
    130,836,639.14x = 180,555,756.18 × 72,101,411.72
  4. Step 4: Simplify right side
    130,836,639.14x = 13,018,324,914,750,114
  5. Step 5: Solve for x
    x = 13,018,324,914,750,114/130,836,639.14
  6. Step 6: Final answer
    x = 99,500,606.25

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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.