Home / 201,346,966.92-301,829,102.46-128,358,903.72

Finding the Fourth Proportional to 201,346,966.92, 301,829,102.46 and 128,358,903.72

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Solution

The fourth proportional to 201,346,966.92, 301,829,102.46 and 128,358,903.72 is: 192,416,371.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,346,966.92 : 301,829,102.46 = 128,358,903.72 : x
  2. Step 2: Convert to fraction form
    201,346,966.92/301,829,102.46 = 128,358,903.72/x
  3. Step 3: Cross multiply
    201,346,966.92x = 301,829,102.46 × 128,358,903.72
  4. Step 4: Simplify right side
    201,346,966.92x = 38,742,452,702,557,152
  5. Step 5: Solve for x
    x = 38,742,452,702,557,152/201,346,966.92
  6. Step 6: Final answer
    x = 192,416,371.08

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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.