Home / 128,776,155.60-193,164,233.40-77,631,848.40

Finding the Fourth Proportional to 128,776,155.60, 193,164,233.40 and 77,631,848.40

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Solution

The fourth proportional to 128,776,155.60, 193,164,233.40 and 77,631,848.40 is: 116,447,772.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,776,155.60 : 193,164,233.40 = 77,631,848.40 : x
  2. Step 2: Convert to fraction form
    128,776,155.60/193,164,233.40 = 77,631,848.40/x
  3. Step 3: Cross multiply
    128,776,155.60x = 193,164,233.40 × 77,631,848.40
  4. Step 4: Simplify right side
    128,776,155.60x = 14,995,696,483,611,018
  5. Step 5: Solve for x
    x = 14,995,696,483,611,018/128,776,155.60
  6. Step 6: Final answer
    x = 116,447,772.60

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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.