Home / 128,758,707.90-193,138,061.85-117,043,386.30

Finding the Fourth Proportional to 128,758,707.90, 193,138,061.85 and 117,043,386.30

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Solution

The fourth proportional to 128,758,707.90, 193,138,061.85 and 117,043,386.30 is: 175,565,079.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,758,707.90 : 193,138,061.85 = 117,043,386.30 : x
  2. Step 2: Convert to fraction form
    128,758,707.90/193,138,061.85 = 117,043,386.30/x
  3. Step 3: Cross multiply
    128,758,707.90x = 193,138,061.85 × 117,043,386.30
  4. Step 4: Simplify right side
    128,758,707.90x = 22,605,532,782,342,840
  5. Step 5: Solve for x
    x = 22,605,532,782,342,840/128,758,707.90
  6. Step 6: Final answer
    x = 175,565,079.45

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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.