Home / 129,164,448.60-193,527,428.10-77,938,829.40

Finding the Fourth Proportional to 129,164,448.60, 193,527,428.10 and 77,938,829.40

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Solution

The fourth proportional to 129,164,448.60, 193,527,428.10 and 77,938,829.40 is: 116,775,950.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,164,448.60 : 193,527,428.10 = 77,938,829.40 : x
  2. Step 2: Convert to fraction form
    129,164,448.60/193,527,428.10 = 77,938,829.40/x
  3. Step 3: Cross multiply
    129,164,448.60x = 193,527,428.10 × 77,938,829.40
  4. Step 4: Simplify right side
    129,164,448.60x = 15,083,301,202,906,666
  5. Step 5: Solve for x
    x = 15,083,301,202,906,666/129,164,448.60
  6. Step 6: Final answer
    x = 116,775,950.09

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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.