Home / 129,163,509.60-193,526,019.60-77,937,890.40

Finding the Fourth Proportional to 129,163,509.60, 193,526,019.60 and 77,937,890.40

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Solution

The fourth proportional to 129,163,509.60, 193,526,019.60 and 77,937,890.40 is: 116,774,542.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,163,509.60 : 193,526,019.60 = 77,937,890.40 : x
  2. Step 2: Convert to fraction form
    129,163,509.60/193,526,019.60 = 77,937,890.40/x
  3. Step 3: Cross multiply
    129,163,509.60x = 193,526,019.60 × 77,937,890.40
  4. Step 4: Simplify right side
    129,163,509.60x = 15,083,009,705,133,052
  5. Step 5: Solve for x
    x = 15,083,009,705,133,052/129,163,509.60
  6. Step 6: Final answer
    x = 116,774,542.22

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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.