Home / 128,574,425.05-177,434,140.76-75,662,827.45

Finding the Fourth Proportional to 128,574,425.05, 177,434,140.76 and 75,662,827.45

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Solution

The fourth proportional to 128,574,425.05, 177,434,140.76 and 75,662,827.45 is: 104,415,545.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,574,425.05 : 177,434,140.76 = 75,662,827.45 : x
  2. Step 2: Convert to fraction form
    128,574,425.05/177,434,140.76 = 75,662,827.45/x
  3. Step 3: Cross multiply
    128,574,425.05x = 177,434,140.76 × 75,662,827.45
  4. Step 4: Simplify right side
    128,574,425.05x = 13,425,168,776,062,892
  5. Step 5: Solve for x
    x = 13,425,168,776,062,892/128,574,425.05
  6. Step 6: Final answer
    x = 104,415,545.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.