Home / 129,141,291.53-178,217,656.38-72,627,117.48

Finding the Fourth Proportional to 129,141,291.53, 178,217,656.38 and 72,627,117.48

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Solution

The fourth proportional to 129,141,291.53, 178,217,656.38 and 72,627,117.48 is: 100,226,925.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,141,291.53 : 178,217,656.38 = 72,627,117.48 : x
  2. Step 2: Convert to fraction form
    129,141,291.53/178,217,656.38 = 72,627,117.48/x
  3. Step 3: Cross multiply
    129,141,291.53x = 178,217,656.38 × 72,627,117.48
  4. Step 4: Simplify right side
    129,141,291.53x = 12,943,434,666,920,532
  5. Step 5: Solve for x
    x = 12,943,434,666,920,532/129,141,291.53
  6. Step 6: Final answer
    x = 100,226,925.98

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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.