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Finding the Fourth Proportional to 139,889,430.40, 209,834,145.60 and 88,997,065.60

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Solution

The fourth proportional to 139,889,430.40, 209,834,145.60 and 88,997,065.60 is: 133,495,598.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,889,430.40 : 209,834,145.60 = 88,997,065.60 : x
  2. Step 2: Convert to fraction form
    139,889,430.40/209,834,145.60 = 88,997,065.60/x
  3. Step 3: Cross multiply
    139,889,430.40x = 209,834,145.60 × 88,997,065.60
  4. Step 4: Simplify right side
    139,889,430.40x = 18,674,623,221,083,148
  5. Step 5: Solve for x
    x = 18,674,623,221,083,148/139,889,430.40
  6. Step 6: Final answer
    x = 133,495,598.40

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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.