Home / 128,952,043.20-193,428,064.80-103,442,875.20

Finding the Fourth Proportional to 128,952,043.20, 193,428,064.80 and 103,442,875.20

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Solution

The fourth proportional to 128,952,043.20, 193,428,064.80 and 103,442,875.20 is: 155,164,312.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,952,043.20 : 193,428,064.80 = 103,442,875.20 : x
  2. Step 2: Convert to fraction form
    128,952,043.20/193,428,064.80 = 103,442,875.20/x
  3. Step 3: Cross multiply
    128,952,043.20x = 193,428,064.80 × 103,442,875.20
  4. Step 4: Simplify right side
    128,952,043.20x = 20,008,755,167,283,916
  5. Step 5: Solve for x
    x = 20,008,755,167,283,916/128,952,043.20
  6. Step 6: Final answer
    x = 155,164,312.80

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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.