Home / 139,261,501.60-208,892,252.40-74,691,420.10

Finding the Fourth Proportional to 139,261,501.60, 208,892,252.40 and 74,691,420.10

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Solution

The fourth proportional to 139,261,501.60, 208,892,252.40 and 74,691,420.10 is: 112,037,130.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,261,501.60 : 208,892,252.40 = 74,691,420.10 : x
  2. Step 2: Convert to fraction form
    139,261,501.60/208,892,252.40 = 74,691,420.10/x
  3. Step 3: Cross multiply
    139,261,501.60x = 208,892,252.40 × 74,691,420.10
  4. Step 4: Simplify right side
    139,261,501.60x = 15,602,458,979,643,632
  5. Step 5: Solve for x
    x = 15,602,458,979,643,632/139,261,501.60
  6. Step 6: Final answer
    x = 112,037,130.15

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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.