Home / 139,390,292.48-208,948,961.28-78,009,425.60

Finding the Fourth Proportional to 139,390,292.48, 208,948,961.28 and 78,009,425.60

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Solution

The fourth proportional to 139,390,292.48, 208,948,961.28 and 78,009,425.60 is: 116,937,759.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,390,292.48 : 208,948,961.28 = 78,009,425.60 : x
  2. Step 2: Convert to fraction form
    139,390,292.48/208,948,961.28 = 78,009,425.60/x
  3. Step 3: Cross multiply
    139,390,292.48x = 208,948,961.28 × 78,009,425.60
  4. Step 4: Simplify right side
    139,390,292.48x = 16,299,988,449,169,440
  5. Step 5: Solve for x
    x = 16,299,988,449,169,440/139,390,292.48
  6. Step 6: Final answer
    x = 116,937,759.14

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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.